Question

алгебра помогите пжжжжжж​

Answer 1

$1,4<\sqrt{2}<1,5 \ \ \ \cdot | \ 5 \\ \\ 1,4\cdot 5<5\sqrt{2}<1,5\cdot 5 \\ \\ 7<5\sqrt{2}<7,5$

$1,4<\sqrt{2}<1,5 \ \ \ \ \cdot | \ (-2) \\ \\ 1,4\cdot (-2)<-2\sqrt{2} < 1,5\cdot (-2) \\ \\ -2,8<-2\sqrt{2}<-3$