Britney is solving a quadratic equation. her first
step is shown below.
problem: 3x^2– 8-10x = 3(2x + 3)
step 1: 3x2^2 - 10x - 8 = 6x + 9
which two properties did britney use to get to step
1?
i addition property of equality
ii. commutative property of addition
iii. multiplication property of equality
iv. distributive property of multiplication
over addition
1) i and ii
2) i and iv
3) ii and iii
4) ii and iv