Question

solve the quadratic equation by factorisation
i) 4 x^2 + 16 x = 48 ​

Answer 1

Answer:

2 and -6

Step-by-step explanation:

=> 4x² + 16x = 48

=> 4x² + 16x - 48 = 0

=> 4x² + (24 - 8)x - 48 = 0

=> 4x² + 24x - 8x - 48 = 0

=> 4x(x + 6) -8(x + 6) = 0

=> (4x - 8)(x + 6) = 0

=> 4x - 8 = 0 and x + 6 = 0

=> x = 2 and x = -6