Question

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Answer 1

Answer:

(a) 2x + 3y - 4z = the value of x is 1 and y is -1 and z is 2 then we multiplie 2 × 1 + 3×(-1) - 4 × 2 = 2 + (-3) - 8 = - 2 - 8 = -10 the answer is - 10

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