Mathematics for IGCSE & O level - Sketching Curves (Section 4 - No. 4)
If the function is \(y = x^2 + 4x + 4\), at what x value does the graph intersect the x-axis?
-4
0
2
-2
Vysvětlení
By factoring or recognizing the perfect square, we see that x+2=0, so x=-2