Year 7 maths · E.8 · Expressions
Evaluate expressions with two variables and exponents
Replace each letter with its value. Do exponents first.
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Evaluate a² + b when a = 6 and b = 4.
Answer: 40
Evaluate a² + b when a = 2 and b = 8.
Answer: 12
Evaluate a² + b when a = 1 and b = 1.
Answer: 2
Tip: Replace each letter with its value. Do exponents first.
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