Question

maths
2x square +7x+3​

Answer 1

Answer:

Answer:

x=3,-0.5

Step-by-step explanation:

Given : 2x^2+7x+32x2+7x+3

To Find: x

Solution:

2x^2+7x+32x2+7x+3

We will use discriminant rule  : x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}x=2a−b±b2−4ac

a = 2

b = 7

c= 3

Substitute the values .

x=\frac{-7\pm\sqrt{7^2-4(2)(3)}}{2(2)}x=2(2)−7±72−4(2)(3)

x=\frac{-7+\sqrt{7^2-4(2)(3)}}{2(2)},\frac{-7-\sqrt{7^2-4(2)(3)}}{2(2)}x=2(2)−7+72−4(2)(3),2(2)−7−72−4(2)(3)

x=3,-0.5x=3,−0.5

Answer 2

Answer:

(x+3) (2x+3)

Step-by-step explanation:

= 2x^2+7x+3

by factorisation method,

= 2x^2+6x+x+3

= 2x(x+3)+1(x+3)

= (x+3) (2x+1)