2 of 6 by 4+5=2R
if x=13-4√3, find √x
Solve using substitution.
–x − 5y = –15
2x − 9y = 11
factorise 17ab- 17b + 34 - 17a
–10x − 9y = 20
–8x − 6y = 4
6x⁵+11x⁴-33x³-33²+11x+6=0
1.86 divided by 3
x<5 or x>11/3
find the value of k so that x=-1 and y=-1 is a solution of the linear equation 9kx - 12ky = 42
