What is the complete factorization of * ^2+4x-45

Question

Mathematics

Paul

1 June, 02:08

What is the complete factorization of * ^2+4x-45

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Answers (2)

Know the Answer?

Rashad Kim · Answer 1

Step-by-step explanation:

*²+4x-45 = (x²+4x+4) - 4 - 45

= (x+2) ² - 7²

by identity : a²-b² = (a+b) (a-b

(x+2) ² - 7² = (x+2-7) (x+2+7)

the factorization is:

*²+4x-45 = (x-5) (x+9)

Royce Flowers · Answer 2

=x^2+x (9-5) - 45

=x^2+9x-5x-45

=x (x+9) - 5 (x-9)

= (x+9) (x-5)