Question

Factorise : 2x2 + x - 45

Answer 1

Answer:

given that 2x²+x-45

Step-by-step explanation: by factorising we get

⇒2x²+10x-9x-45

⇒2x[x+5]-9[x+5]

⇒[2x-9] [x+5]

⇒ x=9/2 and x=-5

Answer 2

Answer:

On comparing with standard quadratic equation that is ax2 + bx + c.

Let us simplify the given expression, we get

2x2 + x – 45 = 2x² + 10x – 9x – 45

= 2x(x + 5) – 9 (x + 5)

= (x + 5) (2x – 9)