(24X + 5^3) - 4.5^4=5^4
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`(24x^5-18x^4+30x^3) \div 6x^3`
`= 24x^5 \div 6x^3 -18x^4 \div 6x^3 + 30x^3 \div 6x^3`
`= 4x^2-3x+5`
Ta có: \(2x^4+11x^3+11x^2-24x-36\)
\(=2x^4+4x^3+7x^3+14x^2-3x^2-6x-18x-36\)
\(=\left(x+2\right)\left(2x^3+7x^2-3x-18\right)\)
\(=\left(x+2\right)\left(2x^3+4x^2+3x^2+6x-9x-18\right)\)
\(=\left(x+2\right)^2\left(2x^2+3x-9\right)\)
\(=\left(x+2\right)^2\cdot\left(2x^2+6x-3x-9\right)\)
\(=\left(x+2\right)^2\cdot\left(x+3\right)\left(2x-3\right)\)
Ta có: \(x^5+7x^4+21x^3+47x^2+80x+60\)
\(=x^5+4x^4+4x^3+3x^4+12x^3+12x^2+5x^3+20x^2+20x+15x^2+60x+60\)
\(=\left(x^2+4x+4\right)\left(x^3+3x^2+5x+15\right)\)
\(=\left(x+2\right)^2\cdot\left(x+3\right)\left(x^2+5\right)\)
Ta có: \(\frac{2x^4+11x^3+11x^2-24x-36}{x^5+7x^4+21x^3+47x^2+80x+60}\)
\(=\frac{\left(x+2\right)^2\cdot\left(x+3\right)\left(2x-3\right)}{\left(x+2\right)^2\cdot\left(x+3\right)\left(x^2+5\right)}=\frac{2x-3}{x^2+5}\)
A= (937.1 - 4.5) - (-4.5 + 37.1) -100
= (937-20) - 17 -100
= 917- 17-100
=900-100=800
(2x+24).53=4.55
=> 2x+24=4.55:53
=> 2x+16=4.52
=> 2x+16=4.25
=> 2x+16=100
=> 2x=100-16
=> x=84:2
=> x=42
(2x+24).53=4.55
=> 2x +2^4 = 4.5^5:5^3
=> 2x+16 = 4.5^2
=> 2x+16 = 4.25
=> 2x+16= 100
=> 2x= 100-16
x=84
=> x= 84:2
x=42
a/|x|-2,5=27,5
=>|x|=27,5+2,5=30
=>x=30 hoặc x=-30
b/\(\dfrac{3}{4}+\dfrac{2}{5}.x=\dfrac{29}{60}\)
=>\(\dfrac{2}{5}.x\)=\(\dfrac{29}{60}-\dfrac{3}{4}\)=\(\dfrac{-4}{15}\)
=>x=\(\dfrac{-4}{15}:\dfrac{2}{5}\)=\(\dfrac{-2}{3}\)
c/(x-1)\(^5\)=-32
=>x-1=-2 vì (-2)\(^5\)=-32
=>x=-2+1=-1
d/\(\dfrac{4}{5}.x+0,5=4.5\)
=>\(\dfrac{4}{5}.x+0,5=20\)
=>\(\dfrac{4}{5}.x=20-0,5=19,5\)
=>\(x=19,5:\dfrac{4}{5}\)=\(\dfrac{195}{8}\)
Bài làm
( 24x + 53 ) - 4.54 = 54
( 24x + 53 ) - 4.625 = 625
( 24x + 53 ) - 2500 = 625
( 24x + 53 ) = 625 + 2500
( 24x + 53 ) = 3125
24x + 125 = 3125 - 125
24x = 3000
x = 3000 : 24
x = 125
Vậy x = 125
# Chúc bạn học tốt #
( 24x + 53 ) - 4 . 54 = 54
( 24x + 125 ) - 4 . 625 = 626
( 24x + 125 ) - 2500 = 625
24x + 125 = 625 + 2500
24x + 125 = 3125
24x = 3125 - 125
24x = 3000
x = 3000 : 24
x = 125
Học tốt !