Complete the sentence by selecting the correct phrase.
The expression (a2−)2−(b2)2 is an example of


Which of the listed expressions are equivalent to (a2)2− (b2)2?
Select all that apply.

When you arrive at the lake, your friend realises he hasn’t got any swimming trunks. you need to ride to a sports shop. the sports shop is 8350 metres away. how many metres is it to cycle there and back?

What is the length of the missing leg in this right triangle? 18 mm 24 mm 26 mm 32 mm

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?