Question

b) Find the coefficient of x^2 and X in
the product of (x-2)(x-4) (x-7)​

Answer 1

Answer:

We solve the given product (x−1)(1−2x) as follows:

(x−1)(1−2x)=(x×1)+[x×(−2x)]+(−1×1)+[(−1)×(−2x)]

=x−2x

2

−1+2x

=−2x

2

+3x−1

From the above calculations, we observe that the coefficient of x

2

is −2 and coefficient of x is 3.

Hence, the coefficient of x is

Answer 2

Answer:

Coefficient of x is 0

Coefficient of x^2 is -37

Step-by-step explanation:

(x-3) (x+7) (x-4)

(x^2+4x-21) (x-4)

x^3+4x^2-21x-4x^2-16x-84

x^3-37x-84

x coefficient is 0

x^2 coefficient is -37

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