diff --git a/applications/fpvviewer/examples_files/mathml/quadratic_formula_presentation.mathml b/applications/fpvviewer/examples_files/mathml/quadratic_formula_presentation.mathml
new file mode 100644
index 000000000..a6d3a6b9f
--- /dev/null
+++ b/applications/fpvviewer/examples_files/mathml/quadratic_formula_presentation.mathml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE math 
+    PUBLIC "-//W3C//DTD MathML 2.0//EN"
+           "http://www.w3.org/TR/MathML2/dtd/mathml2.dtd">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
+  <mrow>
+    <mi>x</mi>
+    <mo>=</mo>
+    <mfrac>
+      <mrow>
+        <mo form="prefix">&#x2212;<!-- &minus; --></mo>
+        <mi>b</mi>
+        <mo>&#x00B1;<!-- &PlusMinus; --></mo>
+        <msqrt>
+          <msup>
+            <mi>b</mi>
+            <mn>2</mn>
+          </msup>
+          <mo>&#x2212;<!-- &minus; --></mo>
+          <mn>4</mn>
+          <mo>&#x2062;<!-- &InvisibleTimes; --></mo>
+          <mi>a</mi>
+          <mo>&#x2062;<!-- &InvisibleTimes; --></mo>
+          <mi>c</mi>
+        </msqrt>
+      </mrow>
+      <mrow>
+        <mn>2</mn>
+        <mo>&#x2062;<!-- &InvisibleTimes; --></mo>
+        <mi>a</mi>
+      </mrow>
+    </mfrac>
+  </mrow>
+</math>
\ No newline at end of file
diff --git a/applications/fpvviewer/examples_files/mathml/standard_deviation.mathml b/applications/fpvviewer/examples_files/mathml/standard_deviation.mathml
new file mode 100644
index 000000000..3a5196bd6
--- /dev/null
+++ b/applications/fpvviewer/examples_files/mathml/standard_deviation.mathml
@@ -0,0 +1,61 @@
+<!DOCTYPE math 
+    PUBLIC "-//W3C//DTD MathML 2.0//EN"
+           "http://www.w3.org/TR/MathML2/dtd/mathml2.dtd">
+<math xmlns="http://www.w3.org/1998/Math/MathML">
+  <mrow>
+    <mi>&#x03c3;</mi>
+    <mo>=</mo>
+    <msqrt>
+      <mrow>
+        <mfrac>
+          <mrow>
+            <mn>1</mn>
+          </mrow>
+          <mrow>
+            <mi>N</mi>
+          </mrow>
+        </mfrac>
+        <mstyle displaystyle='true'>
+          <mrow>
+            <munderover>
+              <mrow>
+                <mo>&#x2211;</mo>
+              </mrow>
+              <mrow>
+                <mi>i</mi>
+                <mo>=</mo>
+                <mn>1</mn>
+              </mrow>
+              <mrow>
+                <mi>N</mi>
+              </mrow>
+            </munderover>
+            <mrow>
+              <msup>
+                <mrow>
+                  <mo stretchy='false'>(</mo>
+                  <msub>
+                    <mrow>
+                      <mi>x</mi>
+                    </mrow>
+                    <mrow>
+                      <mi>i</mi>
+                    </mrow>
+                  </msub>
+                  <mo>&#x2212;</mo>
+                  <mi>&#x03bc;</mi>
+                  <mo stretchy='false'>)</mo>
+                </mrow>
+                <mrow>
+                  <mn>2</mn>
+                </mrow>
+              </msup>
+            </mrow>
+          </mrow>
+        </mstyle>
+      </mrow>
+    </msqrt>
+    <mo>.</mo>
+  </mrow>
+</math>
+