To multiply the polynomials ( (9x^2 + 10x + 4) ) and ( (9x^2 + 5x + 1) ), you can use the distributive property (also known as the FOIL method for binomials). Multiply each term in the first polynomial by each term in the second polynomial, then combine like terms. The resulting polynomial will be a degree 4 polynomial. For the full expansion, the result is ( 81x^4 + 85x^3 + 49x^2 + 20x + 4 ).
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5x + 4 = 10x - 5 10x - 5x = 4 + 5 5x = 9 x = 1.8
6-3x = 5x-10x+2 4 = 8x-10x 4 = -2x x = -2
10x - 18 = 5x + 2 Add -5x + 18 to both sides of the equation, to get: 5x = 20, from which x = 4.
10x + 2y + 8z - 5x + 4z - 4y = 10x - 5x + 2y - 4y + 8z + 4z = (10 - 5)x + (2 - 4)y + (8 + 4)z = 5x - 2y + 12z
(3x)^(2-4) = (3x)^-2 = (9x2)^-1 = 1/(9x2)