Cho biểu thức : A=(√x+1)/(√x-2) +(2√x)/(√x+2 )+(2+5√x)/(4-x) a.Rút gọn A b.Tính giá trị của A khi x=2 c.Tính giá trị của A khi X-5√x+6=0

Menahem asked Jan 1, 2022

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30 votes

Cho biểu thức : A=(√x+1)/(√x-2) +(2√x)/(√x+2 )+(2+5√x)/(4-x)

a.Rút gọn A
b.Tính giá trị của A khi x=2
c.Tính giá trị của A khi X-5√x+6=0

Menahem asked Jan 1, 2022

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8 votes

Answer:

A= (3*X - 6
√(x) )/(X-4)

A=(3*2 - 6
√(2) )/(2-4)= -3+3
√(2)

A=(3*4 - 6
√(4) )/(4-4) Unknown

Explanation:

Jakeva answered Jan 7, 2022

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