(2a+5)*(2a+5)=(2a+5)(2a-5)

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Solution for (2a+5)*(2a+5)=(2a+5)(2a-5) equation: 



(2a+5)(2a+5)=(2a+5)(2a-5)

We move all terms to the left:

(2a+5)(2a+5)-((2a+5)(2a-5))=0

We use the square of the difference formula

4a^2+(2a+5)(2a+5)+25=0

We multiply parentheses ..

4a^2+(+4a^2+10a+10a+25)+25=0

We get rid of parentheses

4a^2+4a^2+10a+10a+25+25=0

We add all the numbers together, and all the variables

8a^2+20a+50=0

a = 8; b = 20; c = +50;
Δ = b2-4ac
Δ = 202-4·8·50
Δ = -1200
Delta is less than zero, so there is no solution for the equation

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