Advertisements
Advertisements
Question
Factorise: (4.5)2 – (1.5)2
Sum
Advertisements
Solution
(4.5)2 – (1.5)2
= (4.5 + 1.5) (4.5 - 1.5) ...[a2 – b2 = (a + b) (a – b)]
= 6 × 3 = 18
shaalaa.com
Factorisation by Difference of Two Squares
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Factorise: `4/25 - 25b^2`
Factorise: (5a - 3b)2 - 16b2
Factorise: 49(x - y)2 -9(2x + y)2
Factorise: `(7 3/10)^2 - (2 1/10)^2`
Factorise: a2 + 4a + 4 - b2
factorise: x2 + 6x + 9 - 4y2
factorise : a2 - (b - c)2
factorise : 16(5x + 4)2 -9(3x - 2)2
Factorise: (a - 3b)2 - 36 b2
Evaluate (using factors) : 3012 x 300 - 3003.
