Jawaban:
tulisannya kurang jelas kak
a. x² + 5x + 6 =0
[2+3=5] [2×3=6]
(x+2)(x+3)
x = -2 atau x = -3
b. x² + 3x -10 = 0
[-2+5=3] [-2×5= -10]
(x-2)(x+5)
x = 2 atau x = -5
c. x² - 5x + 4 = 0
[-1+(-4)=-5] [-1×-4]
(x-1)(x-4)
x = 1 atau x = 4
d. x² - 25 = 0
(x-√25)(x+√25)
(x-5)(x+5)
x = 5 atau x = -5
e. 3x² - 48 = 0
[48:3= 16]
3x(x-√16)
3x(x-4)
x = 4 atau x = -4
f. 5x² + 15 = 0
[15:5=3]
5x(x + √3)
x = -(√3)
g. -3x²=0
x = 0
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Jawaban:
tulisannya kurang jelas kak
a. x² + 5x + 6 =0
[2+3=5] [2×3=6]
(x+2)(x+3)
x = -2 atau x = -3
b. x² + 3x -10 = 0
[-2+5=3] [-2×5= -10]
(x-2)(x+5)
x = 2 atau x = -5
c. x² - 5x + 4 = 0
[-1+(-4)=-5] [-1×-4]
(x-1)(x-4)
x = 1 atau x = 4
d. x² - 25 = 0
(x-√25)(x+√25)
(x-5)(x+5)
x = 5 atau x = -5
e. 3x² - 48 = 0
[48:3= 16]
3x(x-√16)
3x(x-4)
x = 4 atau x = -4
f. 5x² + 15 = 0
[15:5=3]
5x(x + √3)
x = -(√3)
g. -3x²=0
x = 0