Find the inverse of the following matrices by writing them in the form I - D and using the sum-of-powers method on D. Check the accuracy of your answer by using the determinant-based formula for the inverse of 2-b)1-2 matrix .

Use addition and subtraction to simplify the following polynomials. a. add polynomials: (3 – 4x + 8x^2) + (–6 + 2x – 5x^2) step 1: rewrite the polynomials without the parentheses. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial. b. subtract polynomials: (3x – 5 – 7x^2) – (–2 + 6x^2 – 5x) step 1: rewrite the polynomials without the parentheses. remember to multiply each term in the second parentheses by –1. show your work. step 2: write the polynomial in descending order and use parentheses around like terms. step 3: add the like terms identified in step 2 to simplify the polynomial.

Simply 8x squared + 5(7x squared- x) - 2x =

What is the solution of log2  (3x  -  7)  =  3? 4 5