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Lukas
Today, 19:28
Factor z^2 + 17z + 72.
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Kendall Petty
Today, 19:55
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it would be (z+8) (z+9) to this question
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Chasity Hopkins
Today, 20:49
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(z + 8) (z + 9)
Step-by-step explanation:
To factorise the quadratic
Consider the factors of the constant term ( + 72) which sum to give the coefficient of the z - term ( + 17)
The factors are + 8 and + 9
since 8 * 9 = 72 and 8 + 9 = 17, hence
z² + 17z + 72 = (z + 8) (z + 9) ← in factored form
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