Factorisation of (lm + l) + m +1 is
(a) (Im +1) (m + l)
(b) (lm + m) (l+1)
(c) I(m+1)
(d) (l+1) (m +1)
Answer :
(d) (l+1) (m +1)
Factorisation of 63x²- 112y² is
(a) 63(x-2y) (x + 2y)
(b) 7(3x + 2y) (3x-2y)
(c) 7(3x+4y) (3x- 4y)
(d) none of these
Answer :
(c) 7(3x+4y) (3x- 4y)
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