Rs aggarwal class 8 exercise 6d
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1
Find each of the following products:(i) (x + 6) (x + 6)(ii) (4x + 5y) (4x + 5y)(iii) (7a + 9b) (7a +
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2
Find each of the following products:(i) (x – 4) (x – 4)
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3
Expand (i) (8a + 3b)2 (ii) (7x + 2y)2 (iii) (5x + 11)2 (vi) (9x – 10)2
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4
Find each of the following products:(i) (x + 3) (x – 3) (ii) (2x + 5) (2x – 5)
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5
Using the formula for squaring a binomial, evaluate the following:(i) (54)2 (ii) (82)2 (iii) (103)2
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6
Using the formula for squaring a binomial, evaluate the following:(i) (69)2=
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7
Find the value of:(i) (82)2 – (18)2
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8
Find the value of the expression (9x2 + 24x + 16), when x = 12.
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9
Find the value of the expression (64x2 + 81y2 + 144xy), when x = 11 and y = 4/3.
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10
Find the value of the expression (36x2 + 25y2 – 60xy), when x =2/3 and y = 1/5.
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11
If x+1/x=4 then find the value of x2+1x2.
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12
If x-1/x=5, find the values of x2+1/x2 and x4+1/x4
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13
Find the continued product:(i) (x + 1) (x – 1) (x2 + 1)(ii) (x – 3) (x + 3) (x2 + 9)(iii) (3x – 2y)
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14
If x + y = 12 and xy = 14, find the value of (x2 + y2).
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15
If x – y = 7 and xy = 9, find the value of (x2 + y2).
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