3 years ago

If A = –2p + 7 and B = p2 + 3p – 5, find an expression that equals A – 3B in standard form.

Mathematics

1 answer:

Sophie [7]3 years ago

4 0

Answer:

-3p^2 - 11p + 22

Step-by-step explanation:

A - 3B becomes (-2p + 7) - 3*(p^2 + 3p - 5).

Perform the indicated multiplication, obtaining:

(-2p + 7) - 3p^2 - 9p + 15, and then:

-2p + 7 - 3p^2 - 9p + 15, or (combining like terms):

-3p^2 - 11p + 22

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