Complete the square and find the roots (where y=0) of: "x^2+4x-5"
completing the square: (x+2)^2-9 finding the roots: (x+2)^2=9 x+2=+/-3 at y= 0, x= -5 or 1
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Related Maths GCSE answers
All answers ▸Solve equations 2x+y=9 and x+2y=6 to find x and y.
what is differentiation for?
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Show that the lines y=3x+7 and 2y-6x=8 are parallel (not using a graphical method).