Let's see what the options look like when we multiply the expressions in brackets:
(first, i multiply both parts of the second bracked by the first part of the first bracket, and then the same with the second part of the first bracket:
<span>(1) (3x - 3)(x - 2))
3x2 +6x -3x +6// this is not correct
(2) (3x + 3)(x - 2) </span>
3x2-6x+3x-6//this is not correct
(3)
3(x + 1)(x - 2)
3(x2-2x+x-2)//simplifying:
3(x2-x-2)//multiplying:
3x2-3x-6)
- so this is not correct either
(4) 3(x - 1)(x - 2)
3(x2-2x - x + 2)
3(x2-3x +2)
3x2-9x +6 - well, here is our winner!
(8x + 2y) - (7x + 2y) = 30 - 24
X = 6
Answer:
The answer is B
Step-by-step explanation:
Because 3 1/5 as a decimal is 3.2
So 3.2 x 7 = 22.4
converted to a fraction is 11 2/5
and 22 2/5 simplified is 11 2/5
