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 2 years ago
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
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

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

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

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

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

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

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

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

cwrw238
 2 years ago
Best ResponseYou've already chosen the best response.1now 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.

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