3 years ago

Half of the sum of nine and p is the same as p minus three

Mathematics

1 answer:

Nataly_w [17]3 years ago

7 0

Answer:

3÷(9+p)=p-3

Step-by-step explanation:

use the distributive property

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Step-by-step explanation:

We need to solve $(8m-3n)^2 - (4m+3n)^2$

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Using the above formula,

$(8m-3n)^2 - (4m+3n)^2=(8m)^2+(3n)^2-2(8m)(3n)-[(4m)^2+(3n)^2+2(4m)(3n)]\\\\=64m^2+9n^2-48mn-(16m^2+9n^2+24mn)\\\\=64m^2+9n^2-48mn-16m^2-9n^2-24mn\\\\=48m^2-48mn-24mn\\\\=48m^2-72mn$

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