Question

(ii) Solve using quadratic formula
(a) x²+ 7x - 60​

Answer 1

Answer:

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

d = b2-4ac

= (7)2-4(1)(-60)

49+240

289

x = -b+_sw.rootD /2a

x = -7+-sq.root289 /2

x = -7+_17/2

x = -7+17/2 and x = -7-17/2

x = 10/2 and x = -24/2

x = 5 and x = -12