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3 years ago

3x^2+x^2=20 (3x squared+ x squared = 20)

Mathematics

2 answers:

liq [111]3 years ago

7 0

Answer:

Step-by-step explanation:

hello :

Question

3x²+x²=20

4x² = 20

x² =5

x= √5 or x= - √5

marin [14]3 years ago

3 0

Answer:

x = ± $\sqrt{5}$

Step-by-step explanation:

Given

3x² + x² = 20, that is

4x² = 20 ( divide both sides by 4 )

x² = 5 ( take the square root of both sides )

x = ± $\sqrt{5}$

That is x = - $\sqrt{5}$ or x = $\sqrt{5}$ ← exact solutions

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<h3><u>Answer:</u></h3>

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