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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

9. Perfect Squares

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Exercise 15 Page 68

To factor a perfect square trinomial, the first and last terms have to be perfect squares.

No

Practice makes perfect

To determine if an expression is a perfect square trinomial, we need to ask ourselves three questions.

Is the first term a perfect square?	x^2=( x)^2 ✓
Is the last term a perfect square?	168=( sqrt(168))^2 *
Is the middle term twice the product of sqrt(168) and x?	26x≠ 2* sqrt(168)* x *

As we can see, the answer to the second and the third questions above is no. Therefore, we cannot write the trinomial as the square of a binomial.

Subchapter links

Exercises p.68-71