a*a+3a=40

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Solution for a*a+3a=40 equation:


a*a+3a=40

We simplify the equation to the form, which is simple to understand 
a*a+3a=40

We move all terms containing a to the left and all other terms to the right. 
+1a+3a=+40

We simplify left and right side of the equation. 
+4a=+40

We divide both sides of the equation by 4 to get a. 
a=10

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