Dijawab guys lagi butuh nih
Memotong sumbu x → y = 0
[tex] \: [/tex]
f(x) = 2x² - 18
y = 2x² - 18
0 = 2x² - 18
18 = 2x²
[tex]\tt \frac{18}{2}[/tex] = x²
9 = x²
x = ± [tex]\sqrt{9}[/tex]
[tex] \tt {x}_{1} = 3, {x}_{2} = -3 [/tex]
Jadi, f(x) = 2x² - 18 memotong sumbu x di titik (-3, 0) dan (3, 0) (Opsi B)
[tex]\blue{\boxed{\pink{\boxed{\orange{\star ~ \green{\mathcal{S}ilvie ~ \mathcal{R}ubia} ~ \star}}}}}[/tex]
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