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shtirl [24]
3 years ago
13

Which of the following would best be solved using factoring by grouping?

Mathematics
2 answers:
mart [117]3 years ago
7 0

ANSWER

4)x^3+ 5x^2- 9x- 45=0

EXPLANATION

Factoring by grouping is used to factor expressions that have four terms.

Among the given options, the fourth option is

x^3+ 5x^2- 9x- 45=0

There are already four terms in this expression.

So we group the first two and the last two and factor.

We can see that x² is common to the first two terms and -5 is common to the last 2 terms.

The fourth choice is correct.

snow_lady [41]3 years ago
5 0

Answer:

The fourth

Step-by-step explanation:

It has 4 terms

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3 years ago
Is ∆JKL ≅ ∆KJM ? Justify your answer below.
makkiz [27]

Answer:

Yes, the triangles are congruent by ASA

Step-by-step explanation:

we know that

If any two angles and the included side are the same in both triangles, then the triangles are congruent by Angle-Side-Angle (ASA)

In this problem

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Answer:

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Step-by-step explanation:

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\sf\implies \:  - 15 - ( - 4) + 17

\sf \implies \:  - 15 + 4 + 17

\sf \implies \:  - 15 + 21

\boxed{ \tt \: ans \dashrightarrow 6}

<h3>Remember these laws of integers:</h3>

  • (+)(-)=(-)
  • (-)(+)=(-)
  • (-)(-)=(+)
  • (+)(+)=(+)

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