Persamaan kuadrat yang akar- akarnya 5 dan -2 adalah
a x²₊7x₊10=0
b x²₊3x₋10=0
c x²₋7x₊10=0
d x²-3-10=0
e x²₊3x₊10=0
a x²₊7x₊10=0
b x²₊3x₋10=0
c x²₋7x₊10=0
d x²-3-10=0
e x²₊3x₊10=0
Takamori37
Susun ulang persamaan:
![$\begin{align}(x-x_1)(x-x_2)&=0 \\ (x-5)(x-(-2))&=0 \\ (x-5)(x+2)&=0 \\ x^2+2x-5x-10&=0 \\ x^2-3x-10&=0\ \ [D]\end{align}](https://tex.z-dn.net/?f=%24%5Cbegin%7Balign%7D%28x-x_1%29%28x-x_2%29%26%3D0+%5C%5C+%28x-5%29%28x-%28-2%29%29%26%3D0+%5C%5C+%28x-5%29%28x%2B2%29%26%3D0+%5C%5C+x%5E2%2B2x-5x-10%26%3D0+%5C%5C+x%5E2-3x-10%26%3D0%5C+%5C+%5BD%5D%5Cend%7Balign%7D "$\begin{align}(x-x_1)(x-x_2)&=0 \\ (x-5)(x-(-2))&=0 \\ (x-5)(x+2)&=0 \\ x^2+2x-5x-10&=0 \\ x^2-3x-10&=0\ \ [D]\end{align}")
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izharulhaq78
1 votes
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