solve:- -8(x+5)=-2x(x-3)
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Answered by
1
Ans 23
Step-by-step explanation:
8x+40=2x-6
8x-2x=-6-40
6x=46
x=46/2
x=23
amishkumarjha191:
thank for
Answered by
2
Answer:
7 + √129 or 7 - √129
2. 2.
Step-by-step explanation:
-8x - 40 = -2x^2 + 6x
-8x -40 + 2x^2 - 6x = 0
-8x - 6x + 2x^2 - 40 = 0
-14x + 2x^2 - 40 = 0
°•° 2x^2 - 14x - 40 = 0
a= 2 , b= -14 , c= -40
quadratic formula
x = -b +- √ b^2 - 4ac
2a
= -l4 +- √ (-14)^2 - 4(2) (-40)
2 (2)
after factorisation
•
•
= 7 +√129 or. 7-√129
2. 2.
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