Question

Please tell me fast it's very important. ​

Answer 1

Step-by-step explanation:

changing negative Power into positive by resiprocal.so,

2/1²+3/1²+4/1²=(2+3+4)²/1=9²/1

9² answer

l hope it help you

Answer 2

Answer:

29

Step-by-step explanation:

$\frac{1}{ {2}^{ - 2} } + \frac{1}{ {3}^{ - 2} } + \frac{1}{ {4}^{ - 2} }$

${2}^{2} + {3}^{2} + {4}^{2}$

$4 + 9 + 16$

$29$

That's all

Is it cleared dear

Thank you