4x^2 - 6y -3x + 8xy
6y=4-5x^2 solve for x
ab-ay-bx+xy
0.00021 divided 0.0007
x^3 + 7x^2 +x+7
$2x+3y=6$<br/>solve for $x$
13x+2y=3 solce for x
20w^3-8w^2-35w+14
20w^3-8w^2-35w+14 factor each trinomial. if it cannot be factored, write prime
fully factorize x^2-7x-18
