Question

If p(x) = 2x^2 - 3x = 5, then p(-1) is equal to :
(a) 7
(b) 8
(c) 9
(d) 10

Answer 1

Answer:

p(x) = 2x² - 3x = 5

or , p(x)= 2x² - 3x - 5 = 0

so,

p( - 1) = 2 × ( -1)² -3 × ( -1) - 5

= 2 × 1 + 3 - 5

= 2 + 3 - 5

= 5 - 5

= 0.

the answer is 0.

Answer 2

Answer : is 7

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