Question

d2-7d+12=0 Factorise as negative values inside​

Answer 1

Answer:

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d^2-7d+12= 0

by middle term splitting.

d^2-3d-4d+12

d(d-3)-4(d-3)

(d-4)(d-3)

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Answer 2

Answer:

d= 4 or 3

Step-by-step explanation:

$d^{2}$-7d+12=

d^{2}- 4d-3d+12=0

d(d-4)-3(d-4)=0

(d-4)(d-3)=0

d=4 or d=3