Factorize algebraic expressions: a2 + 3a – 88
We have,
a2 + 3a – 88
By considering, p+q = 3 and pq = -88
So we can replace 3a by 11a – 8a
-40 by -11 × 8
a2 + 3a – 88 = a2 + 11a – 8a – 88
= a (a + 11) – 8 (a + 11)
= (a – 8) (a + 11)
Divide as directed (x4 – 81) ÷ (x3 + 3x2 + 9x + 27)
Divide as directed (3x3 – 6x2 – 24x) ÷ (x – 4) (x + 2)
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Factorise x2 + 2xy – 99y2
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