Question

Matematica pag 147 ex 10 cls 5b:a) (5 la puterea 2 -4 la puterea 2):9 ??? b) 12•35-12•24+12 ??? c) [9 la puterea 2 - 2 la puterea 4 • 5 la puterea 9 :(5 la puterea 4 ) la puterea 2}:2 la puterea 2. ???​

Answer 1

Răspuns:

(5²-4²):9=(25-16):9=9:9=1

12*35-12*24+12=12*(35+24)+12=12*59+12=12*60=720

[9²-2⁴*5la puterea9:(5⁴)²]:2²=(81-16*5la puterea9:5 la puterea 8):4=(81-16*5):4=(81-80):4=1:4=0.25