Question

factorise a²+20a -69​

Answer 1

Answer:

Hope my answer helps you mate :-)

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

the factors of 69 are 1*69,23*3,etc..

so the required factors are 23 and -3

a²+20a+69 =a²+(23+(-3))a-69

=a²+23a-3a-69

=a(a+23)-3(a+23)

=(a+23)(a-3) is answer