Question

îmi puteti rezolva!!!!!!!​

Answer 1

Răspuns:

1) 15√7+3[-4√3+5(2√7+9√3-21)]=

=15√7+3(-4√3+10√7+45√3-105)=15√7-12√3+30√7+135√3-105=

=45√7+123√3-105

2) (√8+√3)-(√48+2√8):4=(2√2+√3)-(4√3+4√2):4=

=(2√2+√3)-4(√3+√2):4=2√2+√3-√3-√2=√2

3) √3(3√2-√5)+√2(√3-2√5)=3√6-√15+√6-2√10=4√6-√15-2√10

Explicație pas cu pas: