Shane and his family go to the movie theatre and buys 6 tickets for $12 each. then they spend a total of $31 for popcorn and dri
nks. how much did shane and his family spend for tickets, popcorn, and drinks at the movie theatre?
1 answer:
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The extraneous solution is x=-1 and x=-6
Step-by-step explanation:
Given the question as;
Eliminate the root in the left hand side
solve the quadratic equation by factorization
Find multiples of 6 that add up to 7-------- 1*6
Rewrite the equation as;
x²+7x+6=0
x²+6x+x+6=0
x(x+6) +1 (x+6) =0
(x+1)(x+6) =0
x+1=0
x=-1
or
x+6=0
x=-6
The roots are, x=-1, and x=-6
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Quadratic equations : brainly.com/question/1332667
Keywords : extraneous, solution
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