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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

8. Differences of Squares

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Exercise 86 Page 63

Use the polynomial identities to expand the square of a binomial.

x^2+6x+9

Practice makes perfect

We can find the product of this expression using polynomial identities. Let's start by rewriting the expression as a square of a binomial. (x+3)(x+3)=(x+3)^2 Now, we have the square of a binomial. Let's expand it!

(x+3)^2

ExpandPosPerfectSquare

(a+b)^2=a^2+2ab+b^2

x^2+2 * x * 3+3^2

Calculate power

x^2+2 * x * 3+9

Multiply

x^2+6x+9

Subchapter links

Exercises p.60-63