2(a+5)(a-3)=2a2+4a-30

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Solution for 2(a+5)(a-3)=2a2+4a-30 equation: 



2(a+5)(a-3)=2a^2+4a-30

We move all terms to the left:

2(a+5)(a-3)-(2a^2+4a-30)=0

We get rid of parentheses

-2a^2+2(a+5)(a-3)-4a+30=0

We multiply parentheses ..

-2a^2+2(+a^2-3a+5a-15)-4a+30=0

We multiply parentheses

-2a^2+2a^2-6a+10a-4a-30+30=0

We add all the numbers together, and all the variables

=0

a=0/1

a=0

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