Combine like terms: -3x + 7y - 2z -3 + 4y - 2x + 5 * -5x + 11y + (-2z) + 2
5x + 3y --2z + 8
-1x + 11y + 2z -8
-5x + 11y -2z - 2

Ibelieve that the answer is 1 but i could be wrong

1.   an exact solution requires a radical solution - no decimal approximation.2. (a)4x^3 = 756x^3 = 756/4 = 189x =   cube root of 189 =   5.74   to nearest hundredth answer(b)   189 = 3*3*3*7   so we can write the cube root of 189 as 3∛7 answerchecking (a) 4*(5.74^3 =   756.48   which is very close(b)   4* ((3∛3)^3   = 4*189   = 756   - spot on! 3. i would use solution b because the original question asked for an exact solution.

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