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Andrews [41]
2 years ago
14

−1/2(7z+4)+15(5z−15) =

Mathematics
2 answers:
pentagon [3]2 years ago
6 0
There you go! that’s how you enter it

pishuonlain [190]2 years ago
5 0

Answer:

69

Step-by-step explanation:

your momhrhrhfhfjhfif

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3 years ago
If a/\2+1/a/\2=11, then a+1/a=?
Nadya [2.5K]

Answer:

\pm \sqrt{13}

Step-by-step explanation:

\bigg(a +  \frac{1}{a}  \bigg)^{2} =  {a}^{2}   +  \frac{1}{ {a}^{2} }  + 2 \times a \times  \frac{1}{a}  \\  \\ \bigg(a +  \frac{1}{a}  \bigg)^{2} = 11 + 2 \\  \\   \bigg(a +  \frac{1}{a}  \bigg)^{2} = 13 \\  \\  \bigg(a +  \frac{1}{a}  \bigg) =  \pm \sqrt{13}

5 0
3 years ago
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