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3 years ago

Find the length of the side of the square

Mathematics

1 answer:

Tomtit [17]3 years ago

7 0

(6x-1)=(4x+6)

x=3.5

6(3.5)-1=4(3.5)+6

20=20

The length of the side of the square is 20cm

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Question:

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Answer:

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Solution:

For a Quadratic Equation of form : $a x^{2}+b x+c=0$ ---- eqn 1

The solution is $x=\frac{-b \pm \sqrt{b^{2}-4 a c}}{2 a}$

Now , the given Quadratic Equation is $x^{2}+5 x+7=0$ ---- eqn 2

On comparing Equation (1) and Equation(2), we get

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Now, here are the rules with discriminants:

1) D > 0; there are 2 real solutions in the equation

2) D = 0; there is 1 real solution in the equation

3) D < 0; there are no real solutions in the equation

Now let solve for given equation

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