3 years ago

Factorise, check by using multiplication a-7a+12

Mathematics

1 answer:

Evgen [1.6K]3 years ago

7 0

Answer:

Step-by-step explanation:

Sum = -7

Product = 12

Factors = (-3) ; (-4) { (-3) * (-4) = 12 and (-3) + (-4) = -7}

a² - 7a + 12 = <u>a² -3a</u> <u>- 4a + (-3)(-4)</u>

= a(a - 3) - 4(a - 3)

= (a - 3)(a - 4)

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Factorise, check by using multiplication a-7a+12​

Factorise, check by using multiplication a-7a+12