Step-by-step explanation:
i) root3 + root5 × 2root5 / 2root5 × 2root5
= 2root15 + 10 / 20
ii) root3 - root7 × root3 - root7 / root3 + root7 × root3 - root7
= 3 - 2root21 + 7 / 3 - 7
= 10 - 2root21 / -4
= -10 - 2root21 / 4
iii) root2 + root7 × 2root2 + root3 / 2root2 - root3 × 2root2 + root3
= 4 + 2root14 + root6 + root21 / 8 - 3
= 4 + 2root14 + root6 + root21 / 5
Perimeter of a rectangle = 2l + 2w
where
l is the length
w is the width
From the question
The length is 3x + 7
The width is 2x + 2
The perimeter is
Simplify
6x + 7 + 4x + 4
Group like terms
6x + 4x + 7 + 4
We have the final answer as
Hope this helps you
