5. Simplify the expressions and find the value when x = -2. (a) 3(x +

1.	5. Simplify the expressions and find the value when x = -2. (a) 3(x + 5) - X - 7 (b) x + 5 - 2(x - 5) (c) 2(4x - 1) + 4(2x + 1) 6. What should be the value of p if the value of 3x² + 4x - p is 5, when (a) x = -1, (b) x = 1? 7. Find the value of the expression a - b3 + 3ab(a - b) when a = -3, b = 1.
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5. Simplify the expressions and find the value when x = -2. (a) 3(x + 5) - X - 7 (b) x + 5 - 2(x - 5) (c) 2(4x - 1) + 4(2x + 1) 6. What should be the value of p if the value of 3x² + 4x - p is 5, when (a) x = -1, (b) x = 1? 7. Find the value of the expression a - b3 + 3ab(a - b) when a = -3, b = 1.

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