Vtcuon save 1.1 score: 0 of 1 pt 1 of 11 (0 complete) hw score 1.1.1 solve the system by using elementary row operations on the equations. follow the systematic elimination procedure. xy + 5x2 = 9 2x, +7xy = 9 find the solution to the system of equations. (simplify your answer. type an ordered pair.) enter your answer in the answer box and then click check answer.

a triangular prism is a 3 dimensional shape composed of triangles and rectangles. it is made from two triangular bases and three rectangular sides.  

answer: it depends on what the tax percentage

6.25 grams

step-by-step explanation:

x^2 + 81

we can factor this using difference of square binomials.

rewrite the equation:

x^2 - (-81)

factor:

(a^2 - b^2) = (√a^2 + √b^2)(√a^2 - √b^2)

(x^2 - (-81) = (x + √-81)(x - √-81)

we can remove the - from under the radical by multiplying it by i.

(x^2 - (-81) = (x + i√81)(x - i√81)

(x^2 - (-81) = (x + 9i)(x - 9i)

we can check our answer by using foil:

x^2 - 9ix + 9ix - 81i^2

x^2 - 81^2

i^2 = -1

x^2 + 81