Seven cakes cost £3.50 how many if there is five?
2 answers:
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M=72 that’s the best I can give you lol not sure if that helps any
Answer:
x = 2 and x = -2
Step-by-step explanation:
The easiest way is to guess. We know that you can't have a square root of a negative number. This constrains x between negative infinity to 2. Testing 2 and -2, we see that it satisfy the equation.
The more systematic approach is shown below
x= -2, 2