Question

Hi ! My name is Kristina and i need some help !


$128 \times 87 \sqrt{1246 \div 54}$
I need fast help !!!!​

Answer 1

Răspuns:

Explicație pas cu pas:

128×87√(1246:54)=2^7·87·√2·7·89:2:27=2^7·87·√623:3³=2^7·3^(-1)·89√623

There are a few mistakes with your numbers and that's why it has no point.

But you must know some rules working with exponents.

a^m·a^n=a^(m+n)

a^m:a^n=a^(m-n)

√a=a^1/2

a^(-1)=1/a

(a^m)^n=a^m·n