Question

i. (4x-3)² + 40x= 21
ii. (x+)(x-1) = 3(x–⅓)
iii. 4x² + 4ax + (a²-b²) = 0
iv. ab²x( a/d x +2c/b) +c²d= 0

Using quadratic formula ​

Answer 1

Answer:

1 (4×-3) २+ 40x = 21

(-12) २ + 40x = 21

- 144 + 40x = 21

40x = 21 + 144

40x = 165

x = 33/8

x = 4.12

2 (x+) (x-1) = 3(x-1/3)

2 (x२- x) = 3x- 1

2x२ - 2x = 3x-1

2x२+1= 3x + 2x

2x२ +1 = 5x