Question

Kalid simplified a polynomial expression as shown.
(6x3 + 8x2 − 7x) − (2x2 + 3)(x − 8)
step 1 (6x3 + 8x2 − 7x) − (2x3 − 16x2 + 3x − 24)
step 2 6x3 + 8x2 − 7x − 2x3 − 16x2 + 3x − 24
step 3 4x3 − 8x2 − 4x − 24
In which step did Kalid make a mistake?

Answer 1

Answer:

Kalid wrong in step 2.

Step-by-step explanation:

The correct step should be :

(6x³ + 8x² - 7x) - (2x³ - 16x² + 3x - 24)

= 6x³ + 8x² - 7x - 2x³ + 16x² - 3x + 24

Answer 2

In the second step, Kalid did not change the sign of the polynomial. Kalid make a mistake in second step.

What is polynomial?

A polynomial expression is an algebraic expression with variables and coefficients.

Kalid simplified a polynomial expression as shown.

(6x³ + 8x² − 7x) − (2x² + 3)(x − 8)

Step 1: (6x³ + 8x² − 7x) − (2x³ − 16x² + 3x − 24)

Step 2: 6x³ + 8x² − 7x − 2x³ − 16x² + 3x − 24

Step 3: 4x³ − 8x² − 4x − 24

In the second step, Kalid did not change the sign of the polynomial.

Kalid make a mistake in second step.

More about the polynomial link is given below.

https://brainly.com/question/17822016

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