Solve means Find the values of x which make the equation true
Factorise x 2 + 2x - 3 Because there is only one x 2, we are looking for: Two numbers which multiply together to give: -3 and Add together to give: +2
So x 2 + 2x – 3 = (x -1)(x +3) That is far as we go because we have only been asked to factorise it. We can not solve it because; we dont know what value it equals
What if the question said solve x 2 + 2x - 3 = 0 It is crucial that the equation equals ZERO Factorise as before x 2 + 2x – 3 = (x -1)(x +3) = 0 Because the brackets are multiplied, one of them must equal ZERO
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