Question

find value of polynomial 1 ) p( x) =3x-4​

Answer 1

Answer:

Given p(x)=5x

2

−3x+7

At x=1

p(1)=5(1)

2

−3(1)+7

=5−3+7

=9

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

The zero of the polynomial p(x) = 3x - 4 is x = \frac{4}{3}x=

3

4

Solution:

Given that,

We have to find the zero of the polynomial

p(x) = 3x - 4p(x)=3x−4

A real number k is a zero of a polynomial p(x), if p(k) = 0

Therefore,

\begin{gathered}p(x) = 0 \\\\3x - 4 = 0\\\\\mathrm{Add\:}4\mathrm{\:to\:both\:sides}\\\\3x-4+4=0+4\\\\3x = 4\\\\\mathrm{Divide\:both\:sides\:by\:}3\\\\\frac{3x}{3}=\frac{4}{3}\\\\Therefore\\\\x=\frac{4}{3}\end{gathered}

p(x)=0

3x−4=0

Add4tobothsides

3x−4+4=0+4

3x=4

Dividebothsidesby3

3

3x

=

3

4

Therefore

x=

3

4

Thus the zero of the polynomial is 4/3

Learn more:

Show that 5 is a zero of polynomial 2x^3-7x^2-16x+5

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Verify that: 4 is a zero of polynomial,p(x)=x-4

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