Question

√3x = x+20
find the value of x.​

Answer 1

Answer:

squaring on both sides

3x^2=x^2+40x+400

2x^2-40x-400

➗ by 2

x^2-20x-200

continue the step,

you will get the answer

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Answer 2

Answer:

= 10 +- 10 UNDER ROOT 3

Step-by-step explanation:

x under root 3 = x + 20

Squaring Both Sides

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

3x^2 = x^2 + 400 + 40x

2x^2 - 40x - 400 =0

x^2 - 20x - 200 = 0

using quadratic formula

D = B^2 - 4AC

= (-20)^2- 4(1)(-200) = 400 + 800 = 1200

X = - B +- UNDER ROOT D/ 2A

AND PUTTING VALUES WE WILL GET X

= 20 +- UNDER ROOT 120 /2  = 10 +- 10 UNDER ROOT 3