Help! rs - st + m - tv​

If x = -2, then x 2-7x+10 equals a. 0 b.20 c.28

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no