Selina solutions

Selina solutions

Grade 6

Substitution (Including Use of Brackets as Grouping Symbols) | Exercise 20(A)

Question 11

Q11)If m = 2, find the difference between the values of 4m^3 and 3m^4.

Solution :

If m=2 then,

4m^3=4\times\left(2\right)^3=4\times2\times2\times2=32

3m^4=3\times\left(2\right)^4=3\times2\times2\times2\times2=48

Now, a difference between 4m^3 and 3m^4:

3m^4-4m^3=48-32=16

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Question 11

Q11)If m = 2, find the difference between the values of 4m^3 and 3m^4.

Solution :

If m=2 then,

4m^3=4\times\left(2\right)^3=4\times2\times2\times2=32

3m^4=3\times\left(2\right)^4=3\times2\times2\times2\times2=48

Now, a difference between 4m^3 and 3m^4:

3m^4-4m^3=48-32=16

Still have questions? Our expert teachers can help you out

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subject-cta
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