(x+2)²-x²=80 do this with proper step (no spam plz)
Answers
Answered by
1
Answer:
x^2+4+4x -x^2=80
4+4x=80
4x=80-4
4x=76
x=19
Answered by
1
Answer:
(x+2)^2-x^2=80
x^2 +2(x)(2)+4-x^2=80
x^2 +4x+4-x^2=80
4x+4=80
4x=80-4
4x=76
x=76/4
x=19
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