Trying to find the right answer to this..

(a+ b) x 7a 2 b 2 = a x 7a 2 b 2 + b + 7a 2 b 2 = (1 x 7) x a x a 2 b 2 + ( 1 x 7) x b x a 2 b 2 = 7 x a 3 b 2 + 7 x a 2 b 3 = 7a 3 b 2 + 7a 2 b3

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Algebraic Expressions and Identities

Short Answer Type

41.

Obtain the product of

^{m, -mn, mnp}

122 Views

42.

Find the product

(i) 2x(3x + 5xy) (ii) a²(2ab - 5c)

587 Views

43.

Find the product : (4p² + 5p + 7) x 3p

122 Views

44.

Carry out the multiplication of the expressions in each of the following pairs
4p, q + r

95 Views

45.

Carry out the multiplication of the expressions in each of the following pairs
ab, a - b

156 Views

46.
Carry out the multiplication of the expressions in each of the following pairs
a + b, 7a²b²

(a+ b) x 7a²b² = a x 7a²b² + b + 7a²b²
                     = (1 x 7) x a x a²b²+ ( 1 x 7) x b x a²b²
                     = 7 x a³b²+ 7 x a²b³
                     = 7a³b²+ 7a²b3

113 Views

47.

Carry out the multiplication of the expressions in each of the following pairs
a² - 9, 4a

144 Views

48.

Carry out the multiplication of the expressions in each of the following pairs
pq + qr + rp, 0

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49.

Complete table.

	First expression	Second expression	Product
(i) (ii) (iii) (iv) (v)	a x + y - 5 p 4p²q²a + b + c	a + c + d 5xy 6p² - 7p + 5 p²- q² abc	.... .... .... .... ....