Question

If x= -6, evaluate :
3x2 + 8x​

Answer 1

Answer:

$3 {x}^{2} + 8x \: where \: x = - 6 \\ 3 {( - 6)}^{2} + 8( - 6) = 3 \times 36 - 48 \\ = 108 - 48 = 60$

60 is the right answer.

Answer 2

Given :

x=-6

To evaluate :

3x² + 8x

Solution :

3(-6)² + 8(-6)

=> 3(36) + (-40)

=> 3(36) - 40

=> 108 - 40

=> 68

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