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8 December, 12:31

Hallie subtracted a quantity from the polynomial 3y^2 + 8y - 16 and produced the expression (y + 2) (y - 2). What quantity did Hallie subtract? Explain how you got your answer.

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Answers (2)
  1. 8 December, 12:39
    0
    If 17$ is good then stop
  2. 8 December, 13:01
    0
    (y+2) (y-2) = y²-4

    3y²+8y-16-?=y²-14

    add? to both sides

    3y²+8y-16=y²-14+?

    minus y² both sides and add 14

    2y²+8y-2

    the quantity was 2y²+8y-2
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