3 years ago

Please help me asap!!!!! 4x^{2} -144

Mathematics

1 answer:

Westkost [7]3 years ago

7 0

Answer:

x=6

Step-by-step explanation:

First you square root the whole problem to get

2x-12=0

then you add 12 to both sides

2x=12

then you divide both sides by two to get

x=6

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$\displaystyle\\Answer:\ x=\sqrt{2}\ \ \ \ \ x=-\sqrt{2}\ \ \ \ \ x=\frac{ln5}{2}$

Step-by-step explanation:

$5x^2-x^2e^{2x}+2e^{2x}=10$

$Let:\ x^2=t \ \ \ \ \ e^{2x}=v\\Hence,\\5t-tv+2v^2=10\\5t-tv+2v^2-10=10-10\\5t-tv-10+2v^2=0\\t(5-v)-2(5-v)=0\\(5-v)(t-2)=0\\5-v=0\\5-v+v=0+v\\5=v\\5=e^{2x}$