Question

EXERCISE - Pe 1 1. Find the value of the following expressions for the given values of variables: (ii) 4a – 3b + c when a = 2, b = (i) a?- 202 + 307 when a = 0, b = -1 and c = 1. (iv) x2 - y² -- z2 when x = 1, y = (i) xy + xy2-27?when x = 1 and y = 2 2 +22 – 24 (V) 4.xyz - 2xy + 3xyz when x = -1, y = 2 and 2= 1. (vi) 5+ 4x - 4x + 2a when x = 3 and a = 5. m if m= 6 and n = 3. 2. Evaluate 311 3. Evaluate XY (x + w), if x = 25, y = 36 and w = 20. 6-2 4-2= 20 If x = 7, y = 6 and z = 4, find the value of 3x + (2y x z). 2 (1) ? 2 +(2) fez? 20172​

Answer 1

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