14x2 + 11x - 15 is not a problem, because there's no question there.
If you want to know its value, then you must tell us what 'x' is.
If you set it equal to some number, then we can calculate what 'x' must be.
But as it is, it's nothing but a very mathematical-looking expression, asking for nothing.
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The answer is 200. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
The answer is 17.085. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
The answer is 14.25. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
The answer is 0. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.
The answer is 174. Simply add the numbers together arithmetically as you would for the problem two plus two. To check your work, a calculator is the best option.