Factorize the following: cos²B + 5cosB - 6

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asked Feb 21, 2022 150k views

2 votes

Factorize the following: cos²B + 5cosB - 6

Mathematics
college

Gage Hendy Ya Boy asked

by Gage Hendy Ya Boy

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1 Answer

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Answer:

(cosB-1)(cosB+6)

Explanation:

use u substitution . u = cosB

u^2+5u-6

factor

(u-1)(u+6)

put cosB back in for u

(cosB-1)(cosB+6)

Joan Cardona answered Feb 25, 2022

by Joan Cardona

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