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22-05-2021
Mathematics

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if 2 is a zero of the polynomial px = 2x² - 3x + 7a find the value of a

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Аноним Аноним

22-05-2021

Answer:

[tex]x = 2 \\ f(2) = > 2( {2})^{2} - 3(2) + 7a = 0 \\ 2 + 7a = 0 \\ 7a = - 2 \\ a = - \frac{2}{7} [/tex]

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22-05-2021

Answer:

If 2=0 than x=2

p(x)=2x² - 3x + 7a

p(2)=0

2*2²-3*2+7a=0.

8-6+7a=0

a=[tex] \frac{-2}{7} [/tex]

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