we can evaluate 40² -30², using the identity
Answers
Answered by
0
Answer:
700
Step-by-step explanation:
a^2-b^2=(a+b)(a-b)
40^2-30^2=(40+30)(40-30)
=(70)(10)
=700
Answered by
1
Answer:
using a²-b²=(a+b)(a-b)
40²-30²=(40+30)(40-30)
=70*10
= 700
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