Question

2x+5/x=7
$\geqslant$

​

Answer 1

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$\frac{2x + 5}{7} = 7$

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$\frac{2x + 5}{7} = 7 \\ 2x + 5 = 7 \times 7 \\ 2x + 5 = 49 \\ 2x = 49 - 5 \\ 2x = 44 \\ x = \frac{44}{2} \\ x = 22$

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Answer 2

Step-by-step explanation:

2x²+8x+8

here a = 2, b= 8 c= 8

by using quad formula we get

(-8)+-√ (-8)²-4×2×8/2×2

= (-8)+- √ 64-64/4

= -8+-0/4

taking + part we get

-8+0/4 = -8/4

= -2

taking -ve part w e get

-8-0/4 .= -8/4 = -2