Solve the simultaneous equations 3x + y = 23 and 4x + 4y = 52

3x + y =23, 4x +4y=5212x+4y=92, 12x+12y=1568y=64y=8sub in3x+8=23, 3x=15x=5y=8x=5

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Factorise x^2 -2x-3


6x – 7 = 14 – x


Factorise and thus solve: x^2– 2x– 24 = 0


How do you use the quadratic formula?


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