Question

factorise
a²-8a+15 ​

Answer 1

Answer:

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Answer 2

a=5        or    a=3

Use splitting factorization method in this

$a^{2}$ -8a+15

$a^{2}$-5a-3a+15

a(a-5)-3(a-5)

(a-5)(a-3)

a-5=0    or    a-3=0

a=5        or    a=3

Step 1 : Multiply the coefficient of the first term. Here it is 1.

Step 2: Split the middle term in such a way that it is the sum of middle term and product of third term. Here the numbers are -5 and -3 .

Step 3: Take the common factors and group them and then equate them to zero to get the answer.

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