Question

Simplify by combining the like terms : please give the solutions of both questions ​

Answer 1

Answer:

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Step-by-step explanation:

b)

${ - x}^{2} + 7x^{2} - 3x + {7x}^{3} - 5x$

${7x}^3 + {7x}^{2} - {x}^{2} - 3x - 5x$

${7x}^{3} + {6x}^{2} - 8x$

d)

$( {2x}^{2} + 3y - 5) - (4 - x - {x}^{2})$

${2x}^{2} + 3y - 5 - 4 + x + {x}^{2}$

${2x}^{2} + {x}^{2} + 3y - 5 - 4$

${3x}^{2} + 3y - 9$

Answer 2

Answer:

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