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ii Simplify c...

Question

Question 1 (ii)

Simplify combining like terms:

$- z^{2} + 13 z^{2} - 5 z + 7 z^{3} - 15 z$

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Solution

$- z^{2} + 13 z^{2} - 5 z + 7 z^{3} - 15 z = 7 z^{3} + (- z^{2} + 13 z^{2}) - (5 z + 15 z)$
$= 7 z^{3} + 12 z^{2} - 20 z$

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Similar questions

- z^{2} + 13 z^{2} - 5 z + 7 z^{3} - 15 z

- z^{2} + 13 z^{2} - 5 z + 7 z^{3} - 15 z

5 x^{2} y - 5 x^{2} + 3 y x^{2} - 3 y^{2} + x^{2} - y^{2} + 8

Simplify combining like terms:

(i) 21b − 32 + 7b − 20b

(ii) − z² + 13z² − 5z + 7z³ − 15z

(iii) p − (p − q) − q − (q − p)

(iv) 3a − 2b − ab − (a − b + ab) + 3ab + b − a

(v) 5x²y − 5x² + 3y x² − 3y² + x²− y²+ 8xy² −3y²

(vi) (3 y²+ 5y − 4) − (8y − y² − 4)

Question 1 (v)

Simplify combining like terms:

$5 x^{2} y - 5 x^{2} + 3 y x^{2} - 3 y^{2} + x^{2} - y^{2} + 8 x y^{2} - 3 y^{2}$

Question 1 (i)

Simplify combining like terms:

21b - 32 + 7b - 20b

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