Solve n^2+n-90=0 to find the value of n?
Using the quadratic formula with a calculator a=1 b=1 c=-90 answers are n=-10 and n=9Factorising (n-9)(n+10)=0 answers are n=-10 and n=9
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Related Maths GCSE answers
All answers ▸A scalene triangle ABC has side lengths AB=6cm, BC=4cm, and AC=x cm. The angle A, opposite BC, is 40 degrees and the angle B, opposite AC, is 50 degrees. State the sine rule and use it to find the value of x to 3 s.f.
What is 50 as a percentage of 20?
Solve the simultaneous equations: 3a + 2b = 17 and 4a - b = 30
solve 125^(1/3)*2^(-3)