Advertisements
Advertisements
प्रश्न
Use suitable identity to find the following product:
(3 – 2x) (3 + 2x)
Advertisements
उत्तर
By using the identity (x + y)(x – y) = x2 – y2,
(3 – 2x) (3 + 2x) = (3)2 – (2x)2
= 9 – 4x2
APPEARS IN
संबंधित प्रश्न
Evaluate the following using suitable identity:
(102)3
Evaluate the following using suitable identity:
(998)3
Factorise the following:
8a3 + b3 + 12a2b + 6ab2
Evaluate the following using identities:
117 x 83
if `x^2 + 1/x^2 = 79` Find the value of `x + 1/x`
Write in the expanded form: `(x/y + y/z + z/x)^2`
Simplify (2x + p - c)2 - (2x - p + c)2
If a + b = 10 and ab = 21, find the value of a3 + b3
Find the following product:
(3x + 2y) (9x2 − 6xy + 4y2)
If x = 3 and y = − 1, find the values of the following using in identify:
\[\left( \frac{x}{y} - \frac{y}{3} \right) \frac{x^2}{16} + \frac{xy}{12} + \frac{y^2}{9}\]
If a + b + c = 9 and a2+ b2 + c2 =35, find the value of a3 + b3 + c3 −3abc
Find the square of : 3a - 4b
Find the square of `(3a)/(2b) - (2b)/(3a)`.
Use the direct method to evaluate :
(2a+3) (2a−3)
Use the direct method to evaluate :
(xy+4) (xy−4)
Expand the following:
(m + 8) (m - 7)
Expand the following:
(3x + 4) (2x - 1)
If a2 + b2 + c2 = 41 and a + b + c = 9; find ab + bc + ca.
Simplify:
(3a - 7b + 3)(3a - 7b + 5)
Give possible expressions for the length and breadth of the rectangle whose area is given by 4a2 + 4a – 3.
