Question

factorise:
a) 16x^4-81
b) 15pq+9q+15+25p​

Answer 1

Answer:

answer of (a)

Rewrite 16x4 16 x 4 as (4x2)2 ( 4 x 2 ) 2 . Rewrite 81 as 92 . Since both terms are perfect squares, factor using the difference of squares formula, a2−b2=(a+b)(a−b) a 2 - b 2 = ( a + b ) ( a - b ) where a=4x2 a = 4 x 2 and b=9 .

Step-by-step explanation:

answer of (b)

15pq+15+9q+25p

=15pq+9q+15+25p

=3q(5p+3)+5(3+5p)

=(5p+3)(3q+5)

Answer 2

Answer:

This is ur required answer

Step-by-step explanation:

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