3 years ago

Need help asap!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

jonny [76]3 years ago

5 0

Answer:

I needed this points but doesn't know the answer sorry

Step-by-step explanation:

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What is the degree of 7x^5+6x^3+4x+2

11111nata11111 [884]

The degree is the largest exponent on the variable.

Degree: 5

8 0

3 years ago

√(25 - 10 √(3) + 3)<br> (not as a decimal)

nikitadnepr [17]

Answer:

$\huge\boxed{\sqrt{25-10\sqrt3+3}=5-\sqrt3}$

Step-by-step explanation:

$\sqrt{25-10\sqrt3+3}=(*)\\\\25=5^2\\3=(\sqrt3)^2\\10\sqrt3=(2)(5)(\sqrt3)\\\\(*)=\sqrt{5^2-(2)(5)(\sqrt3)+(\sqrt3)^2}\\\\\text{use}\ (a-b)^2=a^2-2ab+b^2\\\\=\sqrt{(5-\sqrt3)^2}\\\\\text{use}\ \sqrt{a^2}=|a|\\\\=|5-\sqrt3|=5-\sqrt3\\\\^{\text{because}\ 5>\sqrt3\to5-\sqrt3>0}$