Question

Q1.solve the quadratic equation x2+7x-60=0 by formula method.​

Answer 1

Explanation:

x²+7x-60

By using quadratic formula

x= -b±√b²-4ac/2a

Here, a = 1 , b= 7 & c= -60

x= -7±√ 7²-4(1)(-60)/2(1)

x= -7±√ 49+240/2

x= -7±√289/2

Here,the discriminant b²-4ac is > than zero,so there will be two real roots.

x= -7±17/2

x= 10/2 or x = -24/2

x= 5 or x = -12

More to know =>

• Quadratic equation have degree 2 .
• form of a quadratic equation: is ax²+bx+c
• where c is constant and not equals to zero.
• If the discriminant b²-4ac is <0 then there will be two complex roots.