Advertisements
Advertisements
प्रश्न
Multiply the following:
(x2 – 5x + 6), (2x + 7)
बेरीज
उत्तर
We have,
(x2 – 5x + 6) and (2x + 7)
∴ (x2 – 5x + 6)(2x + 7) = x2(2x + 7) – 5x(2x + 7) + 6(2x + 7)
= 2x3 + 7x2 – 10x2 – 35x + 12x + 42
= 2x3 – 3x2 – 23x + 42
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३१]
APPEARS IN
संबंधित प्रश्न
Expand.
(a + 2) (a − 1)
Expand.
(13 + x) (13 − x)
Expand.
(3x + 4y) (3x + 5y)
Expand.
`(x + 1/x)(x - 1/x)`
Expand.
`(1/y + 4)(1/y - 9)`
Use the Identity (x + a)(x + b) = x2 + (a + b)x + ab to find the following:
501 × 502
Expand: (x + 2)(x + 3).
Expand: `(m + 3/2)(m + 1/2)`.
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(x + 3)(x + 7)
Using the identity (x + a)(x + b) = x2 + x(a + b) + ab, find the following product
(6a + 9)(6a – 5)
