Question

घटाइए:

(i) x² –5x+2 में से 7x³ – 3x² + 2
(ii) 2y² – 5 + 11y –y³ में से 3y –5y² +7+ 3y³
(iii) 5z +7 –3z² + 5z³ में से 2z³ +7z –5z² + 2
(iv) 5x³ + 7x² + 2x – 4 में से 12x³ – 3x² + 11x + 13

Answer 1

Answer:

masti

Step-by-step explanation:

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Answer 2

Answer:

1) 7x³ - 3x² + 2 from x² - 5x + 2

⇒ x² - 5x + 2 - 7x³ + 3x² - 2

⇒ - 7x³ + 4x² - 5x

Hence, the answer is - 7x³ + 4x² - 5x

Answer:

3) z = 2

Explanation:

Given simple equation:

3(5z-7)-2(9z-11)=4(8z-13)-17

=> 15z-21-18z+22=32z-52-17

=>15z-18z-32z = -52-17+21-22

=> (15-18-32)z = -69-1

=> -35z = -70

=> z = (-70)/(-35)

=> z = 2

Therefore,

z = 2