Find the product of:(i) 2x, 5y and 7z (ii) 4xy, 5x2y2 and 6x3y3
Multiply:
(i) (–3x) and (–5y + 2) (ii) 5xy and (y2 + 3)
Simplify the expressions and evaluate them as directed:
(i) x(x – 3) + 2 for x = 1 (ii) 3y(2y – 7) – 3(y – 4) – 63 for y = –2.
Multiply (x – 2) and (2x + 3).
We hve ( x - 1) x (2x + 3) = x X (2x + 3) - 2 x (2x + 3) = (x X 2x) + ( x X 3) - (2 x 2x) - (2 x 3) = 2x2 + 3x - 4x - 6 = 2x2 - x - 6 [ Adding the like terms 3x and -4x]Thus (x - 2) x (2x + 3) = 2x2 - x - 6
Simplify (a + b) (a - 2b + 3c) - (2a - 3b)c
Multiply the binomials(2x + 5) and (4x - 3)
Multiply the binomials(y - 8) and (3y - 4)
Multiply the binomials(2.5l - 0. 5m) and (2.5l + 0.5m)
Multiply the binomials(a + 3b) and (x + 5)
(2pq + 3q2) and (3pq - 2q2 )
Short Answer Type
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