Question

In the equation c²-4=0 c is equal to

Answer 1

Given the following equation:

`c^2-4=0`

notice that we can factor the expression using the conjugate binomials:

`\begin{gathered} c^2-4=0 \\ \Rightarrow(c-2)(c+2)=0 \end{gathered}`

thus, the only values for c that make the equation true are c = 2 and c = -2