Question

Solve the following equations by factorisation​

Answer 1

Answer:

x^2 -21/4

Step-by-step explanation:

x^2-1/2x-10.1/2

x^2-1/2x-21/2

1/2*(2x^2-x-21)

1/2*(2x^2+6x-7x-21)

1/2*(2x*(x+3)*(2x-7)

1/2*(x+3)*(2x-7)

x^2-1/2*21/2

x^2-21/4