Question

1 ) Indentify the terms of factors in the Following ex peression by free - diag 2
ab + 3 a²b
2) The temperature of a freezer was set at 5

0 C. If the temperature of freezer dropped

by 2

0 C in every hour. What will be the temperature of freezer after 12 hours?
3) Q18. Using suitable properties, evaluate the following. (Also, mention the name of the

property used



(a) (−918) × 46 + (−918) × 54

(b)(−512) × 96​

Answer 1

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The present room temperature = 40\degree C40°C

The room temperature decreasing every hour by rate of = 5\degree C5°C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)40°C + 10×(−5°C)

= 40\degree C-50\degree C\ 40°C−50°C

= -10\degree C−10°C

so, the room temperature after 10 hour = -10\degree C−10°C

Answer 2

$\huge\underline\mathtt\orange{♡Answer♡}$

The present room temperature = 40\degree C40°C

The room temperature decreasing every hour by rate of = 5\degree C5°C

The room temperature after 10 hours will be

= 40\degree C\ +\ 10\times\left(-5\degree C\right)40°C + 10×(−5°C)

= 40\degree C-50\degree C\ 40°C−50°C

= -10\degree C−10°C

so, the room temperature after 10 hour = -10\degree C−10°C