Question

Determine whether -3 is a root of

the equation 3x^+5x-8=0​

Answer 1

Answer:

$3( 3){}^{ - 3} + 5( - 3) - 8 = 0 \\ 3 \times - 27 + ( - 15) - 8 = 0 \\ - 81 - 15 - 8 = 0 \\ - 96 - 8 = 0 \\ - 104 = 0 \\ 104$

Step-by-step explanation:

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Answer 2

Answer:

Putting the value of x in the equation

3(-3)^2+5(-3)-8=0

3(9) -15 -8 = 0

27- 23=0

-3 is not a factor of given eq.

because the answer is not equal to zero