Mathematics: Solve the equation (90−x)^1/2=x.

Solve the equation (90−x)^1/2=x. - id901213859214, portielesc

Ответ:

evarocks352

29.07.2021

x = 9, - 10

Step-by-step explanation:

$(90 - x)^ {\frac{1}{2}} = x \\\\Squaring \ both \ sides \\\\(( 90 - x)^{ \frac{1}{2}})^{2} = x^2\\\\90 -x = x^2\\\\x^2 + x - 90= 0\\\\x^2 + 10x - 9x - 90 = 0\\\\x(x + 10) - 9 (x + 10) = 0\\\\(x - 9)(x + 10) = 0\\\\x = 9 , \ x = \ - 10$

0,0(0 оценок)

Ответ:

tnassan5715

29.07.2021

Mathematics

x=30

Step-by-step explanation:

0,0(0 оценок)

Ответ:

Sevara100

04.10.2020

Mathematics

Step-by-step explanation:

0,0(0 оценок)

Solve the equation (90−x)^1/2=x.

Ответ:

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question