Expand and Simplify (x+7)(x+5)

asked Feb 21, 2021 118k views

3 votes

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1 vote

x^2+5x+7x+35
and then final simplified answer is going to be x^2+12x+35

Sahar Avr answered Feb 23, 2021

3.7k points

4 votes

Answer:

=x^2+12x+35

Explanation:

$\left(x+7\right)\left(x+5\right)$

$\mathrm{Apply\:FOIL\:method}:\quad \left(a+b\right)\left(c+d\right)=ac+ad+bc+bd$

$a=x,\:b=7,\:c=x,\:d=5\\=xx+x\cdot \:5+7x+7\cdot \:5\\=xx+5x+7x+7\cdot \:5\\=x^2+12x+35$

Sneha answered Feb 28, 2021

by Sneha

3.3k points

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