Use the grouping method to factor this polynomial.

Mathematics

1 answer:

IgorLugansk [536]3 years ago

5 0

Answer:

Step-by-step explanation:

Given

x³ + 2x² + 7x + 14 ( factor the first/second and third/fourth terms )

= x²(x + 2) + 7(x + 2) ← factor out (x + 2) from each term

= (x² + 7)(x + 2) → D

You might be interested in

To which set or sets does -20 belong to, Whole numbers, Rational Numbers or Integers

Shtirlitz [24]

-20 is all of those. It's also a real number and a negative number.

5 0

4 years ago

Read 2 more answers

Can someone please tell me if Question 7 and 8 are right? Can you also pleas explain quickly how?

alukav5142 [94]

For 7 Yeah you're correct
You just need to implement the opposite
Since it's division then it turns to multiplication

For 8 also the same

4 0

3 years ago

What price do farmers get for the peach crops? in the third week of June, a random sample of 40 farming regions gave a sample me

prohojiy [21]

Given:
Sample size, n = 40
Sample mean, xb = $6.88
Population std. deviation, σ = $1.92 (known)
Confidence interval = 90%

Assume normal distribution for the population.
The confidence interval is
(xb + 1.645*(σ/√n), xb - 1.645*(σ/√n)
= (6.88 + (1.645*1.92)/√40, 6.88 - (1.645*1.92)/√40)
= (7.38, 6.38)

Answer: The 90% confidence interval is (7.38, 6.38)

6 0

3 years ago

0.1 is rational because it can be written as?

Sladkaya [172]

Answer:

0.1 is rational as it can be written as $\frac{1}{10}$