Question

Using factor theorem, show that 2x + 1 is a factor of 2x³ + 3x² - 11x - 6​

Answer 1

Answer:

Now, 2x+1=0

⇒x=-1/2

f(x)=2x³+3x²-11x-6

⇒f(-1/2)=2(-1/2)³+3(-1/2)²-11(-1/2)-6

             =2(-1/8)+3(1/4)+(11/2)-6

             =(-1/4)+(3/4)+(11/2)-6

             =(-1+3+22-24)÷4

             =0/4

             =0

Step-by-step explanation:

please mark me brainliest and follow me