I need help ASAP! I’ll mark brainliest

SIMPLIFY THIS POLYNOMIAL EXPRESSION: 4 (5X2 + 2) - (-4X2 + 7). + (- 3X2-5)

lana66690 [7]

Answer:

6x^2-10

Step-by-step explanation:

You add like terms. All the x^2 you add them and you add together the ones that are not multiplied by x. Make sure to distribute the negative.

5 0

3 years ago

Read 2 more answers

Ricky has gone through 24 pencils in the past three months. At this rate, how many pencils will Ricky go through in seven months

wlad13 [49]

Ricky will go through 56 pencils in seven months

3 0

3 years ago

Read 2 more answers

Which of the following is a perfect square trinomial?

shutvik [7]

Answer:

A.

Step-by-step explanation:

Take a look at what happens when squaring either of these...

$(ax-by)^2=(ax-by)(ax-by)=a^2x^2-2abxy+b^2y^2\\\\(ax+by)^2=(ax+by)(ax+by)=a^2x^2+2abxy+b^2y^2\\$

Notice a couple of patterns.

1. The last term has a positive coefficient. That rules out answer choices C and D.

2. The coefficient of the middle term is either $+2ab \text{ or } -2ab$ . So what are a and b? a is the square root of the x^2 term and b is the square root of the y^2 term.

$25x^2 \Rightarrow a=5\\\\9y^2 \Rightarrow b=3\\\\ab=15\\\\2ab=30$

The middle coefficient needs to be either +30 or -30. The answer is choice A.

5 0

3 years ago

How to you get the radical form?

Over [174]

Answer:

Note: this answer is kind of long so jump to picture to see a visual process.

In order to find the simplest radical form of a square root, you need prime factorize the number. In order to do this, you take a number and divide it by different prime numbers until all of its factors are now prime. We will use 24 as our example. 24 divided by 2 (which is prime) is 12. 12 divided by 2, is 6. 6 divided by 2 is 3. Therefor, our prime factorization of 24 is 2^3 * 3, which basically means 8 * 3. Then, take take out pairs of the same number and put on the OUTSIDE of the root. However, make sure that it is NEXT to the square root and not inside the mini hook that the square root makes. This means that that number is multiplying the square root of the number. Now, the only pair in this prime factorization is 2, so take two out of the prime factorization and that leaves us with square root 6 times 2, which is the answer.

Also, when taking out pairs, only take one number from the pair (in this case 2) and put it on the outside. If there is another pair, multiply that number by the other number. So if there was a pair of 3 and a pair of 2, take out 1 three and 1 two and multiply them and put on the outside.

Step-by-step explanation:

<h2>PLS MARK ME BRAINLIEST AND FOLLOW M E LOTS OF LOVE FROM MY HEART AND SOUL DARLING TEJASWINI SINHA HERE ❤️</h2>

5 0

2 years ago

Simplify the expression to a + bi form: (9+7i)(6 + i)

Scorpion4ik [409]

$(9 + 7i)(6 + i) \\ = 54 + 9i + 42i + 7 {i}^{2} \\ = 54 + 51i - 7 \\ = 47 + 51i$

I hope I helped you^_^

6 0

3 years ago

Read 2 more answers