3 years ago

ANSWER PLEASE !! -2x-5=10 4x+2y=8 -6x+2y=12

Mathematics

1 answer:

son4ous [18]3 years ago

6 0

Answer:

x= -15/2 y=-33/2

Step-by-step explanation:

i dont know how you want to solve it but if it is "system of equations" then first solve for the first variable in on e of the equations, then substitute the result into the other equation.

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lozanna [386]

Answer:

√6

Step-by-step explanation:

We have to find the value of the expression $\frac{\sqrt{7+\sqrt{24} } }{2} +\frac{\sqrt{7-\sqrt{24} } }{2}$ .

Let, $A = \frac{\sqrt{7+\sqrt{24} } }{2} +\frac{\sqrt{7-\sqrt{24} } }{2}$

⇒ $A^{2} = \frac{7+\sqrt{24} }{4} +\frac{7-\sqrt{24} }{4}+ 2\times \frac{\sqrt{7+\sqrt{24} } }{2} \times \frac{\sqrt{7-\sqrt{24} } }{2}$ {Squaring both sides. Since (a + b)² = a² + b² + 2ab}