Step-by-step explanation:
Did you mean:
= (a - b)(a + b)
= a.a + b.a - b.a - b.b
= a² + ba - ba - b²
= a² - b²
The missing term is -1155.
Step-by-step explanation:
Given expression is
68 * 27 - 81 + ? = 600
Let the missing term be x

Subtracting 1755 from both sides

Therefore,
The missing term is -1155.
Keywords: multiplication, addition
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Answer:
Step-by-step explanation:
Rate = 56 gal / 7 min
= 8 gal / min
Answer:
Adaptive evolution is always changing because the environment is changing continuously.
Hence,
The right answer would be :
Adaptive evolution is a fluctuating change in a trait
Step-by-step explanation:
Answer:
25/2
Step-by-step explanation:
D = 5, E = 10 and F = 4,
D• E/F
5 * 10/4
Multiply and Divide from left to right
50/4
25/2