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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 87 Page 63

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

4x^2-20x+25

Practice makes perfect

We can find the product of this expression using polynomial identities. In this case, we have the square of a binomial.

(2x-5)^2

ExpandNegPerfectSquare

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

(2x)^2-2 * 2x * 5+5^2

Calculate power

4x^2-2 * 2x * 5+25

Multiply

4x^2-20x+25

Subchapter links

Exercises p.60-63