Question

factorise d (d-5) + 7 (5-d) How it will solve step by step with explanation

Answer 1

d(d-5) +7(5-d)

=> d^2 - 5d +35 - 7d

=> d^2 - 12d +35

=> d^2 - 7d - 5d +35

=> d(d-7) - 5(d-7)

=> (d-7)(d-5)

Answer 2

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->

$d(d \: - \: 5) + 7(5 \: - \: d)$

$d( d - 5) \: + 7( - d \: + 5) \\ d(d \: - 5) \: - 7(d \: - 5) \\ (d \: - 5) \: (d \: - 7)$

"-" "×" "-". "+"

$- 4 \times 5 = - 20$

5 4

4

'

$- 3 \times 8 = - 24$

$- 10 \times 10 = - 100$

$- 7 \times 2 = 14$

$- 2 \times 6 = 12$

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