Question

One of the zero of the given polynomial is
2x square + 7x - 4

Answer 1

Answer:

-4

Step-by-step explanation:

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

Answer 2

$\huge\bf\purple{\mathfrak{Solution}}$

$→ {2x}^{2} + 7x - 4 = 0$

$→ {2x}^{2} + 8x - x - 4 = 0$

$→2x(x + 4) - 1(x + 4) = 0$

$→(2x - 1)(x + 4) = 0$

$→x = \frac{1}{2} \: or \: x = - 4$