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Grazes
Group Title
Let the 2 roots of the quadratic equation 9x^2_7x06=0 be r1 and r2. Evaluate the following:
1. (1/r1)+(1/r2)
2. ((1/r1)+(1/r2)^2
 2 years ago
 2 years ago
Grazes Group Title
Let the 2 roots of the quadratic equation 9x^2_7x06=0 be r1 and r2. Evaluate the following: 1. (1/r1)+(1/r2) 2. ((1/r1)+(1/r2)^2
 2 years ago
 2 years ago

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allank Group TitleBest ResponseYou've already chosen the best response.0
Kindly rewrite the equation in a more readable form.
 2 years ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
dw:1343164493957:dw
 2 years ago

allank Group TitleBest ResponseYou've already chosen the best response.0
Thanks @Grazes but I was talking about the original. 9x^2_7x06=0
 2 years ago

allank Group TitleBest ResponseYou've already chosen the best response.0
Is it 9x^27x6=0 ?
 2 years ago

Grazes Group TitleBest ResponseYou've already chosen the best response.0
ohhhh. my bad. dw:1343164807154:dw
 2 years ago

allank Group TitleBest ResponseYou've already chosen the best response.0
No problem. Most of the work here involves factoring the quadratic equation. Can you do that?
 2 years ago

ganeshie8 Group TitleBest ResponseYou've already chosen the best response.0
hint  find sum of roots & product of roots
 2 years ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
sum of roots = b/a product of roots = c/a a,b and c refer to the equation ax^2 + bx + c = 0
 2 years ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
so r1 + r2 =  7/9 and r1r2 = 6/9
 2 years ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
now 1/r1 + 1/r2 = r1 + r2 / r1r2 plug in the values 7/9 and 6/9 into the above and you have answer to 1.
 2 years ago

cwrw238 Group TitleBest ResponseYou've already chosen the best response.1
no 2 is the square of this result
 2 years ago
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