waecmaths question:
The graph of y = x2 and y = x intersect at which of these points
Option A:
(0,0), (1,1)
Option B:
(0,0), (0,1)
Option C:
(1,0), (0,0)
Option D:
(0,0), (0,0)
waecmaths solution:
$\begin{align} & y={{x}^{2}}=x \\ & {{x}^{2}}-x=0 \\ & x(x-1)=0 \\ & x=0\text{ or }x=1 \\ & \text{when }x=0 \\ & y=0 \\ & \text{when }x=1 \\ & y={{1}^{2}}=1 \\ & \text{The coordinates are }(0,0),(1,1) \\\end{align}$
maths year:
maths topics: