Question

What are the solutions of 4x2 = -20x?
Answer
x = 0, x = 5
x = 0, x = -5
x = 4, x = 5
x = 4, x = -5

Answer 1

\( \color{Black}{\Rightarrow 4x^2 + 20x = 0 }\)

Factorise.

\( \color{Black}{\Rightarrow 4x(x + 5) = 0 }\)

Using the zero product rule, either \(4x = 0\), or \(x + 5 = 0\). Simplifying, \(x = 0\) or \(-5\)

Answer 2

thank you

Answer 3

yw