Find the equivalent expression of the following: x3 (x2 + 5x + 7)
1. x5 + 5x3 + 7x2
2. x6 + 5x4 + 7x3
3. x5 + 4x4 + x4 + 8x3 – x3
4. x5 + 3x4 + x4 + 6x3 + x3

Respuesta :

The product of the given function is x^5 + 5x^4 + 7x^3

Product of polynomial functions

The leading degree of a polynomial function is always greater than or equal to 2.

Given the products below;

x^3 (x^2 + 5x + 7)

Expand

(x^3)(x^2) + 5x(x^3) + 7x^3

Simplify

x^5 + 5x^4 + 7x^3

Hence the product of the given function is x^5 + 5x^4 + 7x^3

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The equivalent expression of  x³(x² + 5x + 7) is  x⁵ + 5x⁴ + 7x³

How to find equivalent expression?

The equivalent expression of the expression can be found as follows;

x³(x² + 5x + 7)

let's open the bracket by multiplying.

Therefore,

x³(x² + 5x + 7) = x⁵ + 5x⁴ + 7x³

Hence,

The equivalent expression of  x³(x² + 5x + 7) is  x⁵ + 5x⁴ + 7x³

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