Solved on Feb 29, 2024

Find the difference of two polynomial expressions and write the result in standard form. (7x4+6x511x)(12x+4x42x5)(7x^4 + 6x^5 - 11x) - (12x + 4x^4 - 2x^5)

STEP 1

Assumptions
1. We are given two polynomials that we need to subtract.
2. Standard form for a polynomial is writing the terms with descending powers of the variable.

STEP 2

Write down the given expression that we need to simplify.
(7x4+6x511x)(12x+4x42x5) \left(7 x^{4}+6 x^{5}-11 x\right)-\left(12 x+4 x^{4}-2 x^{5}\right)

STEP 3

Distribute the negative sign to the terms inside the second parenthesis.
=7x4+6x511x(12x)(4x4)+(2x5) = 7 x^{4} + 6 x^{5} - 11 x - (12 x) - (4 x^{4}) + (2 x^{5})

STEP 4

Combine like terms by adding or subtracting the coefficients of the same powers of xx.
=6x5+2x5+7x44x411x12x = 6 x^{5} + 2 x^{5} + 7 x^{4} - 4 x^{4} - 11 x - 12 x

STEP 5

Add the coefficients of x5x^{5} terms.
=(6+2)x5+7x44x411x12x = (6 + 2) x^{5} + 7 x^{4} - 4 x^{4} - 11 x - 12 x

STEP 6

Add the coefficients of x4x^{4} terms.
=8x5+(74)x411x12x = 8 x^{5} + (7 - 4) x^{4} - 11 x - 12 x

STEP 7

Add the coefficients of xx terms.
=8x5+3x4(11+12)x = 8 x^{5} + 3 x^{4} - (11 + 12) x

STEP 8

Complete the addition of the coefficients.
=8x5+3x423x = 8 x^{5} + 3 x^{4} - 23 x

STEP 9

Write the final result in standard form, which is already achieved since the terms are in descending order of their powers.
=8x5+3x423x = 8 x^{5} + 3 x^{4} - 23 x
The difference in standard form is 8x5+3x423x8 x^{5} + 3 x^{4} - 23 x.

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