40=(x-7)(x+7)

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Solution for 40=(x-7)(x+7) equation: 



40=(x-7)(x+7)

We move all terms to the left:

40-((x-7)(x+7))=0

We use the square of the difference formula

x^2+49+40=0

We add all the numbers together, and all the variables

x^2+89=0

a = 1; b = 0; c = +89;
Δ = b2-4ac
Δ = 02-4·1·89
Δ = -356
Delta is less than zero, so there is no solution for the equation

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