Find the roots of x^2+5x+4=0

(x+4)(x+1)=0

x=-1   x=-4

CD
Answered by Christian D. Maths tutor

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Solve these simultaneous equations: 2x + y = 7, and 3x - y = 8. Do so by 1) Eliminating an Unknown and 2) Substitution.


make a the subject of p = (3a+5)/(4-a)


Make x the subject of the equation y=(3x+5)/(4-x)


Expand and simplify 3(m + 4) – 2(4m + 1)


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