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Mathematics
Peter Durham
11 April, 14:53
How many real solutions are there for 5x^2+7x+2?
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Hurst
11 April, 15:43
0
To get the real solutions we factorize the expression:
5x^2+7x+2
we look for two numbers such that when we multiply we get 5x2=10 and when we add w get 7.
The numbers are 5 and 2;
thus:
5x^2+7x+2
=5x^2+5x+2x+2
=5x (x+1) + 2 (x+1)
= (5x+2) (x+1)
thus the real solutions will be:
x=-1 and x=2/5
hence the number of real solutions is 2
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Brisa Stokes
11 April, 16:31
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Applying equation of the second degree we have that
A=5
B=7
C=2
Solving the quadratic equation it gives us as result that has two real solutions
X1 = - 1
X2 = - 2/5
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