Answers
>
Maths
>
GCSE
>
Article
x^2-9x+20=0
x
2
-9x+20=0x
2
-5x-4x+20=0x(x-5)-4(x-5)=0(x-4)(x-5)=0x-4=0x=4x-5=0x=5
GL
Answered by
Georgia L.
•
Maths tutor
3740 Views
See similar Maths GCSE tutors
Related Maths GCSE answers
All answers ▸
8x – 7 > 6x + 12
work out the value of 4a + 2b when a = 4 and b = 3
Factorise and solve x^2 - 8x + 15 = 0.
There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.