x^2 - 2x -3 , if x=-1
x^2 - 2x -3 , if x=5
$\sqrt{\}$ 20 x $\sqrt{\}$ 40
14% of a value is £91, what is the original value?
x+(x*1.2)+(x*1.2*1.2)=774
there are 3 identical circles in a rectangle each touching 2 other circles and the sides of the rectangle each circle has a radius...
Answer this question: (10 x 7) + (3 x 3)? *
4-x<11
+5 (-3 + 2) - [- (-4 + 6) - 3 (-2 + 4) - 3] - (-4 + 2) + [ - (-3 + 5) - 2 (-1 + 3)] =
y=x^2+2x-1