How do you simplify by multiplying $(x+10)^2$ ?

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Answer 1 · 2015-01-05T14:18:31

it's easy. As suggested, I first want to show where $(a+b)^2$ is equal to.
$(a+b)^2 = (a+b)* (a+b) = a*(a+b)+b*(a+b) = a*a+b*a+a*b+b*b = a^2+2ab+b^2$

Now we can easily fill in x and 10:
$(x+10)^2=x^2+2*x*10+10^2 = x^2+20x+100$

How do you simplify by multiplying (x+10)^2(x+10)^2?