Question

find the zero of polynomial 2x 2 + 7x _ 4 is ​

Answer 1

To find the zero of 2x

2

+7x−4 is same as solving the equation 2x

2

+7x−4=0

⇒2x

2

+8x−x−4=0

⇒2x(x+4)−1(x+4)=0

⇒(2x−1)(x+4)=0

⇒x=

2

1

,−4