solve for x root6x+7 - (2x-7)=0
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Answer:
x = 1.5 and 7
Step-by-step explanation:
root(6x+7) = 2x -7
squaring both sides
(6x+7) = 4x^2 +49 - 28x
4x^2 -34x +42 = 0
2x^2 - 17x + 21 = 0
so a=2, b= -17 and c = 21
using formula
x = (-b+- root(b^2 - 4ac))/2a
x= (17+-root(-17^2-4*2*21)/2*2
x= (17+-root(289-168))/4
x= (17+-root121)/4
x=(17+-11)/4
seperating + and -
x= (17+11)/4 and x= 17-11)/4
x= 28/4 and x= 6/4
so x= 7 and 1.5
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