Toán Lớp 6: 3/4×2²+1/4x(-2)²
Nhờ làm câu này:)
Leave a reply
Register Now
Login
Lost Password
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Toán Lớp 6: 3/4×2²+1/4x(-2)²
Nhờ làm câu này:)
Comments ( 2 )
$\dfrac{3}{4}\cdot \:2^2+\dfrac{1}{4}\left(-2\right)^2$
$=\dfrac{3}{4}\cdot \:4+\dfrac{1}{4}\left(-2\right)^2$
$=\dfrac{3}{4}\cdot \:4+\dfrac{1}{4}\cdot \:4$
$=3+\dfrac{1}{4}\cdot \:4$
$=3+1$
$=4$
3/4 . 2^2+1/4 . (-2)^2
= 3/4 . 4 + 1/4 . 4
= 4 . ( 3/4 + 1/4 )
= 4 . 4/4
= 4 . 1
= 4