Find the solutions to the quadratic equation x^2-9x+20=0
By factorising the expression, (x-5)(x-4)=0. This means that either (x-5)=0 or (x-4)=0. By solving these equations we can work out the solutions to be x=4,5.
CM
Related Maths GCSE answers
All answers ▸Solve the simultaneous equations. 2x+5y=-4 and 7x+y=19
In an office there are twice as many females as males. 1/4 of the females wear glasses. 3/8 of the males wear glasses. 84 people in the office wear glasses. Work out the number of people in the office.
R and B are directly proportional variables. When R = 9, B = 3. What does R equal when B = 14?
Expand and simplify (x − 4)(2x + 3y)^2