Solve this problem and show work 7-2x3+8 divided by 2

Mathematics

2 answers:

chubhunter [2.5K]3 years ago

4 0

This should be correct if you are using the order of operations. if you arent then the answer is different

Sidana [21]3 years ago

3 0

Simplify 2 x 3 to 6

7 - 6 + 8/2

Simplify 8/2 to 4

7 - 6 + 4

Then, simplify that. 7 - 6 + 4. First you subtract 7 from 6, which is 1, and 1 + 4 equals 5.

The answer to this problem is 5!

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Angelina_Jolie [31]

Btw I got this answer from gauth.math answer:

7 0

2 years ago

Simplify (x − 4)(x2 − 2x − 3).

lesantik [10]

How to get answer by Mimiwhatsup:

$Distribute\:parentheses\\=xx^2+x\left(-2x\right)+x\left(-3\right)+\left(-4\right)x^2+\left(-4\right)\left(-2x\right)+\left(-4\right)\left(-3\right)\\\mathrm{Apply\:minus-plus\:rules}\\+\left(-a\right)=-a,\:\:\left(-a\right)\left(-b\right)=ab\\=x^2x-2xx-3x-4x^2+4\cdot \:2x+4\cdot \:3\\\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}\\x^2x=\:x^{2+1}=\:x^3\\=x^3\\2xx\\\mathrm{Apply\:exponent\:rule}:\quad \:a^b\cdot \:a^c=a^{b+c}\\xx=\:x^{1+1}=\:x^2\\=2x^2\\4\cdot \:2x\\\\=8x\\$

$4\cdot \:3\\\mathrm{Multiply\:the\:numbers:}\:4\cdot \:3=12\\Group\:like\:terms\\=x^3-2x^2-4x^2-3x+8x+12\\\mathrm{Add\:similar\:elements:}\:-3x+8x=5x\\=x^3-2x^2-4x^2+5x+12\\\mathrm{Add\:similar\:elements:}\:-2x^2-4x^2=-6x^2\\=x^3-6x^2+5x+12\\Answer: =x^3-6x^2+5x+12$