Factorise and solve x^2 + 3x - 4 = 0
To factorise this equation, we must find two numbers that add together to make 3 and multiply to make -4. These numbers must be -3 and -1. We would then rewrite the equation as (x-3)(x-1)=0.
To solve this equation, we need to make either (x-3)=0 or (x-1)=0. This means that there are two solutions to this question.
x-3=0 and x-1=0
This means x=3 or x=1.
DJ
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