1. Factor: 4x^2-100y^2
use difference of two squares,
2. Factor: 3x^2+27
the common factor is 3.
3. Solve 3x^2+9x=0
factor and solve:
x=0 or x=?
4. Solve 12^2+30x=-12
Factor out the 6, and then factor completely to solve for x:
Hint: it's in the form
(2x 1)(x 2)
Expand, transpose everything to the left, and then factor.
6. Solve 16x^2=25
and solve for x.
Algebra II - Solve 1. 3x^2-9x=0 2. 12x^2+30x=-12 3. 9a(a+1)=4 4. 16x^2=25
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