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3 years ago

Can someone help me with factoring by grouping

Mathematics

2 answers:

Helga [31]3 years ago

8 0

Answer:

(x-2)(x+5)

Step-by-step explanation:

idk how to explain but..

First find two factors that make x^2 which is x and x: (x ?)(x ?)

Then because the last number is (-)10, you now know that there is a positive and negative symbol: (x + ?)(x-?)

Lastly, you have to find two factors of 10 that when subtracted equal to positive 3. A +5 and -2 when multiplied will equal to -10, and when subtracted will make +3. Then you can use the FOIL method to double check. im sorry.. ive never done this before lolol

when foiled: x^2 + 5x -2x - 10; x^2+3x-10

Wittaler [7]3 years ago

6 0

Factor : x^2+3x-10

Answer = (x - 2)(x + 5)

Explanation:

Y = x^2 + 3x - 10.

Find 2 numbers knowing sum (3) and product (-10).

Factor pairs of (-10) -> (-1, 10)(-2, 5). This sum is 3 = b. The 2 numbers are: -2 and 5.

y = (x - 2)(x + 5).

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Stolb23 [73]

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3 years ago

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Find the sum of the first 7 terms of the following series, to the nearest integer. 29, 174,1044,...

Alborosie

Answer:

1623623

Step-by-step explanation:

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3 years ago

The period of f(x)=cos (2pi/3)x is ...?

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3 years ago

As part of his semester project, a BYU-Idaho Introductory Statistics student calculates a 95% confidence interval for the true p

lyudmila [28]

Answer:

a. There's a 95% chance that the true proportion is in the confidence interval.

Step-by-step explanation:

When we want to estimate a property of a population (a population's parameter), without surveying the population, we use samples.

Then, with the information of the samples we can calculate the statistics and infere properties about a population. This inferences obviously came with some uncertainty, depending on the properties of the sample and specially the sample size.

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4 years ago

A lent B rs 32500 to purchase a car at 12.5% p.A

LiRa [457]

Answer:

6,483.75

Step-by-step explanation:

Calculation to find the interest paid by B after 3/2 year

First step is to calculate the Compound interest amountUsing this formula

Interest paid= P(1 + r/100)^Time

Where,

P represent principal=32,500

r represent Rate of interest = 12.5%/2 = 6.25%

T represent Time=3/2 years

Let plug in the formula

Compound interest amount= 32,500(1 + 6.25/100)^2*3/2

Compound interest amount= 32,500([1+.0625)^3

Compound interest amount= 32,500(1.0625)^3

Compound interest amount= 32,500 *1.1995

Compound interest amount= 38,983.75

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Interest paid by B = 38,983.75 - 32,500

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Therefore the interest paid by B after 3/2 year will be 6,483.75

7 0

3 years ago