Question

If a=1, b= -1, c= 1, x= -2, y =2 and z= -2, evaluate (ii) -2ax +2by -2cz (iii) ax2+bx+c​

Answer 1

Explanation:

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Answer 2

(ii) 4

(iii) -3

Explanation:

(ii) -2×1×-2+2×-1×2-2×1×-2

=4+-4+4

=4

(iii) 1×-2×2+-1×-2+1

=-4+2+1

=-3

hope this helps