kkatlynn
03.08.2019 •
Mathematics
Which expression is equivalent to (x^2-3x)(4x^2+2x-9)
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Ответ:
(-b +/- srt(b^2 - 4ac))/2a
a, b, and c are representative of this formula: ax^2 +bx + c
1) 2x^2+3x-9=0
(2x - 3)(x + 3) = 0
2x - 3 = 0, x + 3 = 0
+3 +3, -3 -3
2x = 3, ***x = -3***
/2 /2
***x = 3/2***
2) 5x^2+2x=0
(x)(5x + 2) = 0
5x +2 = 0, ***x = 0***
-2 -2
5x = -2
/5 /5
***x = -2/5***
4) 4x^2+7x-2=0
(4x - 1)(x + 2) = 0
4x - 1 = 0, x + 2 = 0
+1 +1, -2 -2
4x = 1, ***x = -2***
/4 /4
***x = 1/4***
Ответ:
(-2, 6) on edge
Step-by-step explanation: