Answer:
13 and 91
Step-by-step explanation:
(a + b)² = a² + 2ab + b² , substitute values
7² = a² + 2(12) + b²
49 = a² + 24 + b² ( subtract 24 from both sides )
25 = a² + b²
Then
a² - ab + b²
= a² + b² - ab , substitute values
= 25 - 12
= 13
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a³ + b³ = (a + b)(a² - ab + b²) ← substitute values
a³ + b³ = 7 × 13 = 91
Answer:
2.10 * 1.01 = 210/100 * 101/100 = 21/10 * 101/100 = 2121/1000 = 2.121
Step-by-step explanation:
Hey, there!!
Here,
3(2x-5)=25 is given.
To slolve: x
Now,
Multiply (2x-5) by 3.
6x-15 = 27.
Shift (-15) on right side.
6x= 27+15
or, 6x= 42
Divide 42 by 6.
![x = \frac{42}{6}](https://tex.z-dn.net/?f=x%20%3D%20%20%5Cfrac%7B42%7D%7B6%7D%20)
Therefore, x= 7.
<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
Answer:
multiply 3x-2(x+8)
Step-by-step explanation:
PEMDAS
also you must simplify both sides to solve this problem and that's the first step to simplifying this side (the other one is simplified)
In a standard equation of dividing a two digit divisor one must follow these steps:
1. Double check if the first two digits of the dividend are equal or larger that the divisor. Start dividing if so.
2. Write the answer above the second digit (or third if the first two digits' value is smaller than the divisor).
3. Multiply the answer with the divisor and subtract it from the dividend (digits used).
4. From the answer to the subtraction, add the next digit to the right of the dividend and repeat process until you get the total quotient.
5. In cases of remainders (extra numbers not divisible by the divisor), write them to the right of the quotient.
Please see attached picture for reference.
Hope this helps.