30.3k views
1 vote
Subtract x3 – 7x2 + 3 from the sum of - 3x3 + x2 and – x2 + 4x - 3.

User Anayza
by
5.8k points

2 Answers

2 votes

Answer:

-4x3 - 11x2 + 4x

Explanation:

-3x3 +x2 -x2 +4x -3 -x3 -7x2 +3

- 4x3 - 11x2 + 4x

User Enfors
by
6.3k points
4 votes

Answer:

x3 – 7x2 + 3------ x3 - 7x2 + 3

3x3 + x2-----------x2 • (3x + 1)

x2 + 4x - 3------------ x2 + 4x - 3

Explanation:

Step 1 :

Equation at the end of step 1 :

((x3) - 7x2) + 3

Step 2 :

Polynomial Roots Calculator :

2.1 Find roots (zeroes) of : F(x) = x3-7x2+3

Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0

Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers

The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient

In this case, the Leading Coefficient is 1 and the Trailing Constant is 3.

The factor(s) are:

of the Leading Coefficient : 1

of the Trailing Constant : 1 ,3

Let us test ....

P Q P/Q F(P/Q) Divisor

-1 1 -1.00 -5.00

-3 1 -3.00 -87.00

1 1 1.00 -3.00

3 1 3.00 -33.00

Hope this helps.

User DaveC
by
6.1k points