Question

if p(x)=2x²-5x+7 then find p(-2/3)​

Answer 1

Answer:

4x−5

Step-by-step explanation:

p(x)=2x² −5x+7

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is 0. The derivative of a$x^{n}$  is na$x^{n-1}$

2×2$x^{2-1}$ −5$x^{1-1}$

 

Multiply 2 times 2.

4$x^{2-1}$−5$x^{1-1}$

Subtract 1 from 2.

4$x^{1}$ −5$x^{1-1}$

Subtract 1 from 1.

4$x^{1}$ −5$x^{0}$

 

For any term t, $t^{1}$=t.

4x−5$x^{0}$

 

For any term t except,$t^{0}$ 0 = 1  

4x−5