Use the model to create zero pairs. What is an equivalent expression that has two terms?
2 answers:
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Side length = 16.7 cm
Solution:
Perimeter of a square given = 66.8 cm
In a square four sides are equal.
The perimeter of a square = 4 × side
⇒ 4 × side = 66.8 cm
Divide both sides of the equation by 4 to equal the expression.
⇒ side = 66.8 ÷ 4
⇒ side =
⇒ side = 16.7 cm
Hence, the side length of the square is 16.7 cm.
Let . Then
lies in the second quadrant, so
So we have
and the fourth roots of are
where . In particular, they are
