Math

Question Multiply 2x2+6x82 x^{2} + 6 x - 8 and x+3x + 3, then express the product in standard form.

Studdy Solution

STEP 1

Assumptions
1. We are given two polynomials, 2x2+6x82x^{2}+6x-8 and x+3x+3.
2. We need to multiply these polynomials together.
3. The product should be expressed in standard form, which means writing the terms from highest to lowest degree.

STEP 2

To find the product of two polynomials, we will use the distributive property (also known as the FOIL method for binomials), which states that each term in the first polynomial must be multiplied by each term in the second polynomial.
(2x2+6x8)(x+3) (2x^{2}+6x-8)(x+3)

STEP 3

First, multiply the first term of the first polynomial by both terms of the second polynomial.
2x2x+2x23 2x^{2} \cdot x + 2x^{2} \cdot 3

STEP 4

Carry out the multiplication for each term.
2x3+6x2 2x^{3} + 6x^{2}

STEP 5

Next, multiply the second term of the first polynomial by both terms of the second polynomial.
6xx+6x3 6x \cdot x + 6x \cdot 3

STEP 6

Carry out the multiplication for each term.
6x2+18x 6x^{2} + 18x

STEP 7

Now, multiply the third term of the first polynomial by both terms of the second polynomial.
8x83 -8 \cdot x - 8 \cdot 3

STEP 8

Carry out the multiplication for each term.
8x24 -8x - 24

STEP 9

Combine all the products obtained from steps 4, 6, and 8.
2x3+6x2+6x2+18x8x24 2x^{3} + 6x^{2} + 6x^{2} + 18x - 8x - 24

STEP 10

Combine like terms. In this case, combine the x2x^{2} terms and the xx terms.
2x3+(6x2+6x2)+(18x8x)24 2x^{3} + (6x^{2} + 6x^{2}) + (18x - 8x) - 24

STEP 11

Add the coefficients of the like terms.
2x3+12x2+10x24 2x^{3} + 12x^{2} + 10x - 24

STEP 12

Write the final expression in standard form, which is already achieved as the terms are ordered from highest degree to lowest degree.
2x3+12x2+10x24 2x^{3} + 12x^{2} + 10x - 24
The product of 2x2+6x82x^{2}+6x-8 and x+3x+3 in standard form is 2x3+12x2+10x242x^{3} + 12x^{2} + 10x - 24.

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