👉🏼Calculate

👈🏼Which is smaller, (x + 5)^{2} or 2x^{2}+10x+27 ?

🖐🏼Without a calculator, calculate

👆🏼Prove that the product of two even numbers

is always even.

👇🏼If , find f^{-1}(x)

👉🏼Calculate

👈🏼Which is smaller, (x + 5)^{2} or 2x^{2}+10x+27 ?

🖐🏼Without a calculator, calculate

👆🏼Prove that the product of two even numbers

is always even.

👇🏼If , find f^{-1}(x)

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