Question

1. Simplify each of the following algebraic expressions.
(i) 2x - (3 - x) + ( x² - 2x + 1)
(ii) x²- [3xy - {7xy - (2xy + 3y)}]
(iii) (x² - xy) - (y²- yz) - (z² - zx)​

Answer 1

$i) \: 2x - (3 - x) + ( {x}^{2} - 2x + 1)$

$\: \: \: \: \: \: 2x - 3 + x + {x}^{2} - 2x + 1$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {x}^{2} + x - 2$

$\sf{ii )\: \: { {x}^{2} - (3xy - (7xy - (2xy + 3y)))}}$

$\: \: \: \: \: \: {x}^{2} - 3xy - 7xy - 2xy - 3y$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: {x}^{2} - 12xy - 3y$

$\sf{iii) \: ( {x}^{2} - xy) - ( {y}^{2} - yz) - ( {z}^{2} - zx)}$

$\: \: \: \: \: {x}^{2} - xy - {y}^{2} + yz - {z}^{2} + zx$

$\: \: \: \: \: \: {x}^{2} - {y}^{2} - {z}^{2} - xy + zx + yz$

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Answer 2

Answer:

I don't think so