Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – (3y + z)2
Advertisements
उत्तर
We have,
9x2 – (3y + z)2 = [(3x)2 – (3y + z)2]
= [3x – (3y + z)][3x + (3y + z)]
= [3x – 3y – z][3x + 3y + z]
APPEARS IN
संबंधित प्रश्न
Expand: (3x + 4y)(3x - 4y)
Expand 4p2 – 25q2
Using identity, find the value of (1.9) × (2.1)
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x2 – 9
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
28ay2 – 175ax2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
25ax2 – 25a
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Factorise the expression and divide them as directed:
(9x2 – 4) ÷ (3x + 2)
Verify the following:
(m + n)(m2 – mn + n2) = m3 + n3
Find the value of a, if 9a = 762 – 672
