Multiply the binomials(2x + 5) and (4x - 3) from Mathematics Al

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Algebraic Expressions and Identities

Short Answer Type

61.

Find the product of:

(i) 2x, 5y and 7z (ii) 4xy, 5x²y² and 6x³y³

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62.

Multiply:

(i) (–3x) and (–5y + 2) (ii) 5xy and (y² + 3)

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63.

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.

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64.

Multiply (x – 2) and (2x + 3).

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65.

Simplify (a + b) (a - 2b + 3c) - (2a - 3b)c

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66.
Multiply the binomials

(2x + 5) and (4x - 3)

(2x + 5) x (4x - 3) = 2x(4x - 3) + 5(4x - 3)
                          = (2x x 4x) - (2x X 3) + ( 5 X 4x) - ( 5 x 3)
                          = 8x² - 6x + 20x - 15
                          = 8x² - 6x + 20x - 15
                          = 8x² + (- 6x + 20)x - 15
                          = 8x² +14x - 15

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67.

Multiply the binomials

(y - 8) and (3y - 4)

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68.

Multiply the binomials

(2.5l - 0. 5m) and (2.5l + 0.5m)

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69.

Multiply the binomials

(a + 3b) and (x + 5)

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70.

(2pq + 3q²) and (3pq - 2q² )

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