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irinina [24]
3 years ago
6

Barry is solving the equation 3x2 - 7x + 12 = 0 using the quadratic formula. He notices that, under the radical, the expression

b2 - 4ac will be negative. This indicates that the equation has
Mathematics
1 answer:
nikklg [1K]3 years ago
5 0
... no real roots.

If the Discriminant is less than zero, the roots are complex (that is, using imaginary numbers). Regular folk say such an equation has no solution.

The graph of this equation, a parabola, hovers above the x-axis. The solution of equaling it to 0 would find where it crosses the x-axis, but it doesn't!
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3 years ago
What is 2x times x squared?
tresset_1 [31]

We want to multiply the monomial 2x by the monomial 2x^2.

Remember that to multiply monomials we need to use the laws of exponents; in this case, the law for multiplying powers with the same base. The rule says that, when you multiply powers of the same base, you just need to add the exponents: (a^m)(a^n)=a^{m+n}, (x^2)(x^4)=x^{2+4}=x^6. Also, is worth pointing out that the exponent of a variable with no exponent is 1: x=x^1.

Remember that we also need to multiply their coefficients , which are the numbers that multiply the variables; again, variables with no numbers have a coefficient of 1, so x=1x. Multiply coefficients is easy, you just need to multiply them as you usually do with everyday numbers.

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We can conclude that 2x times x squared is 2x cubed.



3 0
3 years ago
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I NEED THE ANSWR ASAP: Write the number as a power with a base of 5.<br> 125^3
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