Question

y = x2 + 12x + 36

What is the x-intercept of the graph of the equation above?

Answer 1

Look at the pattern. This function is a perfect square. Factor to find the zero of the function.

Answer 2

think of two numbers, that when added together equal 12, and when multiplied together equal 36, then factor it, and set that equation equal to zero

Answer 3

Factored = \[(x+6)^{2}\] so intercept is -6

Answer 4

\[y=x^2+12x+36=(x+6)^2\implies x=−6\]