$$\begin{bmatrix} x & -y \\\\ 3x & z \end{bmatrix}$$
how much is 2
dexter is twice as old as jonny. In the 10 years, dexter will be three times as old as jonny. how old are they now?
Factorise
12e + 18
845 times 99 = 83655
xsquare+3x+1 divided by x square(x+1)=a /x+b/x+c /x+1
32+8/4-12*4
648x^7-540x^6 -918x^5 +255x^4 +275x^3 +61x^2 -25x+ 6 = 0
8x+4=13+5x
