(x+yi)(2-3i)=5+3i
x+y=
factorize
a + 3whole square - 2 * a + 3hole square
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
