3 years ago

P= -4b^2+6b-9 Q= 7b^2-2b-5 P-Q=

Mathematics

1 answer:

insens350 [35]3 years ago

5 0

Answer:

P - Q = - 11b² + 8b - 4

Step-by-step explanation:

P - Q

= - 4b² + 6b - 9 - (7b² - 2b - 5) ← distribute parenthesis by - 1

= - 4b² + 6b - 9 - 7b² + 2b + 5 ← collect like terms

= - 11b² + 8b - 4

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