multiply (5x-2) by (3x+4)?
write your answer in its simplest form
junior cert question
回答 (18)
= (5x - 2)(3x + 4)
= 15x² + 20x - 6x - 8
= 15x² + 14x - 8
Answer: 15x² + 14x - 8
use foil (first outside inside last)
5x*3x
5x*4
-2*3x
-2*4
so,
15x^2+20x-6x-8
simplified
15x^2+14x-8 would be the final answer.
15x^2 + 20x -6x -8 =
15x^2 +14x -8
(5x - 2) (3x + 4)
= 15x^2 + 20x - 6x - 8
= 15x^2 + 14x - 8 Answer
F.O.I.L
First Outer Inner Last
5x•3x + 5x•4 + (-2•3x) + (-2•4)
15x^2 + 20x - 6x -8
15x^2 + 14x - 8 <---answer
the area of the function (5x +4)/(x^2 +3x +2) is the place (x^2 +3x +2) isn't 0. (x^2 +3x +2) = (x+a million)(x+2) so exclude x=-a million and x=-2 g(x)=sq. root of x + sq. root of (4-x). For the two sqrts to exist 4?x and x?0
(5x-2)(3x+4)
= 15x^2 + 20x - 6x -8
= 15x^2 +14x - 8
(5x - 2)(3x + 4)
= 5x*3x - 2*3x + 5x*4 - 2*4
= 15x^2 - 6x + 20x - 8
= 15x^2 + 14x - 8
15 x ² + 20 x - 6 x - 8
15 x ² + 14 x - 8
收錄日期: 2021-05-01 12:25:21
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