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anonymous
 5 years ago
5x²=7x2
anonymous
 5 years ago
5x²=7x2

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0rearrange 5x^ 2 +7x + 2 = 0 Factorising: (5x +2)(x+1)=0 x = 2/5 , 1

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.05x²+7x+2=0 D=b^24ac Same way as the other 1

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh! I assumed u wanted to solve it!

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.0if ur factorising it is right u have solved it :)

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0yeah i know but did tina want to know the value of the determinant?

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.0i have explained her earlier wht should she put instead of a,b and c....she can find the value herself i guess :)

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.0D=494*5*2=9 X1=(b+sqrD)/2a=(7+3)/2*5=4/10=2/5 X2=(bsqrD)/2a=(73)/2*5=10/10=1 :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2Put the x's to one side 5x² +7x = 2 ; divide out the 5 x^2 + (7/5)x = (2/5) ; complete the square x^2 +(7/5)x+ (7/10)^2 = (2/5) + (7/10)^2 ; clean it up (x+7/10)^2 = 9/100 ; sqrt the sides x+7/10 = + 3/10 ; 7/10 x = 7/10 + 3/10 x = 10/10 , and x = 4/10

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.0hmmmm.....i didn't know this way of solving this....(my way is shorter and better anyway :P )

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2completing the square is how we generalize going from: ax^2 +bx +c <> x = (b + sqrt(b^24ac))/2a

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0there u go! solving by factorising, the general formula and completing the square!!

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2they first learn to "complete the square" so that you understand how the quad fromula is derived

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2otherwise, its simplying teaching to "FOIL" and they learn a memorization technique and remain ignorant about how or why it works :)

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.2How do I get to SanJose from here? I dunno, but Ill know when were there lol

angela210793
 5 years ago
Best ResponseYou've already chosen the best response.0U mean u'll know when u'll** be there? O.o
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