Question

a) 5x2 + 10x = 0

b) 5x2 - 25 = 0

c) 2m2 - 50 = 0

d) b2 + 9b + 14 = 0

e) (x + 2)2 = 4

f) (5m - 3)2 + 30m = 0

g) 4y2 =  0

h) x2 + x + 1 = 21​

Answer 1

a) 5x2 + 10x = 0

x = 0

b) 5x2 - 25 = 0

x = 5/2

c) 2m2 - 50 = 0

m = 25/12

d) b2 + 9b + 14 = 0

b = - 14/11

e) (x + 2)2 = 4

x = 0

f) (5m - 3)2 + 30m = 0

m = 3/20

g) 4y2 =  0

y = 0

h) x2 + x + 1 = 21

x = 20/3