Question

Check x + 3 is a factor of the polynomial 3x2 + 7x – 6.

Answer 1

Step-by-step explanation:

$3 {x}^{2} + 7x - 6$

$3( - 3 {)}^{2} + 7( - 3) - 6$

$27 - 21 - 6$

$27 - 27 = 0$

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Answer 2

Answer:

Let P(x) = 3x² +7x –6 then,

x + 3 = 0

x = –3

P(–3) = 3(–3)² + 7(–3) – 6

= 3× 9 + 7 (–3) –6

= 27 + (–21) – 6

= 27 –21 – 6

= 27 –27

= 0

So, (X + 3) is the factor of P(x).

Step-by-step explanation: