Q. 2 G

# Let’s resolve int

Answer :

To resolve it into factors we first resolve 12

12=1×2×2×3

Given, x2 + (m + n)x + mn=(x + m)(x + n) … (2)

Comparing 1 and 2

m + n =1

mn =-12

(1) can be written as

a2 + 4ab-3ab + 12b2

= (a + 4b)( a-3b)

The resolved factors are (a + 4b)( a-3b).

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