factorise (X+Y)^2+9(X+Y)+20
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Answer : Factored form: y = (x + 4)(x + 5)
Step-by-step explanation:
Find 2 numbers knowing sum (9) and product (20). Factor pairs of (20) --> (2, 10)(4, 5). This sum is 9 = b. Then the 2 numbers are: 4 and 5.
Factored form: y = (x + 4)(x + 5)
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