multiply 3x^2,2xy and 4xy^2 plss step by step explaination ,plss write it in a paper and send me ,I will mark u as a brainlist
Answers
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Step-by-step explanation:
1. *Use simple algebra*
Make the missing number x
SO, -7/12 + x = -5/8
Move "-7/12" over the equality sign. Then this becomes positive because it crossed the equaltiy sign.
x = -5/8+7/12
The you then solve \frac{-5}{8}+\frac{7}{12}
8
−5
+
12
7
using the addition of fractions method.
The -5/12 becomes -(5/12) because of the rule; -a/b = -(a/b)
So you find the lcm (lowest common multiple) = 24
Find the factor of 8 and 12 that gives 24 and multiply it by their respective numerators.
(3*-5 + 2*7)/24 * Solve bracket first*
= -1/24
2. We are solvin this too using the algebra method
Make x the missing number.
-3/8 - x = 5/6
Collect like terms or simply, make the subject of the formula.
SO, -x = 5/6 + 3/8
Solve with Addition of fractions
Find the LCM
LCM is also 24
then find the factors of both numbers that multiply to get 24 and multiply both answers with respective numerators.
(4*5 + 3*3)/24
Solve bracket first
= 29/24 or 1 5/4 ( mixed fraction )
So, -x = 29/24
Get rid of the - in front of the x by dividing both sides by -1
-x/-1 = (29/24)/-1
x = -29/24
3. Same applies here too but then multiplication
Arrange it into algebraic form and make x the subj.
-5/6 * x = 8/9
x = 8/9 ÷ -5/6
Now you solve the fraction using division of fraction. which includes reciprocal and excludes LCM
And using the reciprocal, It is always the fraction on the right, The numerator switches places with the denominator and this changes the division sign to multiplication
8/9 * 6/-5
Then you solve using multiplication of fractions which also excludes LCM and includes straight up multiplication
8*6 = 48
9*-5 = -45
= 48/45 *Break down with 3*
= 16/-15
4.
Find the lcm
LCM = 35
Now you can multiply the factors of both 7 an 5 which gives 35 with their respective numerators. or simply multiply both sides by the other fraction's denominator. e.g. 3/5 * 7/7 and 4/7 * 5/5
3*7 = 21
5*4 = 20
so, 21/35 and 20/35
then multiply each number by 10/10
= 200/350 and 210/350
Any number between this range is your answer.
a) 201/350
b) 209/350
The answer is in the attachment. Click on it.
Do you know the laws of exponents? It will help you to understand the sum if your basic concept is clear. Let me know later.
