For problems 3-7, solve the system using either gaussian elimination with back substitution or gauss-jordan elimination. 3. 2x+3y + z=10 2x-3y-3z-22 4x-2y + 3z =-2 4. 2x+ y +2z-4 2x 2y 5 2x- y+62#2 , z = ' 5, 2x +6z=-9 3x-2y + 112=-16 3x - y 7z-11

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.

Aye asap pls ! markin da brainiest too ! btw da step choices are all add, distribute, divide, n subtract

Find the volume of the solid whose base is the region bounded by f(x), g(x) and the x-axis on the interval [0, 1], and whose cross-sections perpendicular to the y-axis are squares. your work must show the integral, but you may use your calculator to evaluate it. give 3 decimal places for your answe