Question

Simplify: (10m^2+6mx−11x^2)+(−2m^2+4mx+4x^2).

Answer 1

Explanation:

10m^2 + 6mx - 11x^2 - 2m^2 + 4mx + 4x^2

-7x^2 + 10mx + 8m^2

quadratic equation

x = - 4m/7

x = 2m

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we always take the possitive value

x = 2m or m = x/2