Question

write the coefficient of x² in (x-1) (3x-4)

Answer 1

Answer:

Step-by-step explanation:

(x+1)(3x+4)

= x(3x - 4)+1(3x - 4)

= 3x^2 -4x+3x -4

=3x^2 - 4x - 4

Therefore, coefficient of x^2 is 3

Answer 2

Answer:

3

Step-by-step explanation:

Given: $(x-1)(3x-4)$

To find: Coefficient of $x^{2}$.

The given expression can be simplified as:

$(x-1)(3x-4)=3x^{2} -3x-4x+4$

                        $=3x^{2} -7x+4$

Hence, the coefficient of $x^{2}$ in $(x-1)(3x-4)$ is 3.

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