(3x+7)2=9x2+49

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Solution for (3x+7)2=9x2+49 equation: 



(3x+7)2=9x^2+49

We move all terms to the left:

(3x+7)2-(9x^2+49)=0

We multiply parentheses

6x-(9x^2+49)+14=0

We get rid of parentheses

-9x^2+6x-49+14=0

We add all the numbers together, and all the variables

-9x^2+6x-35=0

a = -9; b = 6; c = -35;
Δ = b2-4ac
Δ = 62-4·(-9)·(-35)
Δ = -1224
Delta is less than zero, so there is no solution for the equation

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