chapter 6
substitution
y=4x
x+y=5
x=1 y=4
(-5a3b)(-2a4b2)(3a)
30a8b3
factor each polynomial
2x2-3x-2
(2x+1)(x-2)
Simplify
l4(3)-2l - l2(-2)l
=6
substitution
y=3x
2x+y=15
x=3 y=9
simplify
the square root of 24
2 square root of 6
Factor each polynomial
3m2-18m-3
Prime
Solve
lx+8l=4
x=-4 and x=-12
x=y-7
x+8y=2
y=1 x=-6
simplify
square root of 60
2 square root of 15
Factor each polynomial
2a2+5a+3
(2a+3)(a+1)
simplify
6-3l4-9l+8
7
elimination
9x-5y=3
-9x+5y=-3
all solutions
45x-2=64x+6
x=-8/19
6y2+9y+6
prime
solve
lx-3l=10
x=13 and x=-7
2x-3y=9
y=2x-7
(3,-1)
2 square root of 3 (5+4 square root of 3)
10 square root of 3 +24
3y2-6y-24
3(y+2)(y-4)
solve
l2x+2l=14
x=6 and x=-8