book Maths Puzzle Numerical Ability

Evaluate.

7x^0

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book Other Question

What is the discriminate in the quadratic equation x^2+11x+121=x+96? Can you please help me with the following problem:
How do you find the least common multiple (LCM) for the following group of numbers? 12, 20, and 35.

Can you break down your answer so I will be able to understand?
Thanks!