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3 years ago

Factorise -3c(d-2e)-d(d-2e)

Mathematics

1 answer:

nlexa [21]3 years ago

3 0

-3c(d-2e) -d(d-2e)
(-3c-d)(d-2e)
-1(3c+d)(d-2e)

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P= -4b^2+6b-9<br> Q= 7b^2-2b-5<br> P-Q=

insens350 [35]

Answer:

P - Q = - 11b² + 8b - 4

Step-by-step explanation:

P - Q

= - 4b² + 6b - 9 - (7b² - 2b - 5) ← distribute parenthesis by - 1

= - 4b² + 6b - 9 - 7b² + 2b + 5 ← collect like terms

= - 11b² + 8b - 4

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3 years ago

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Answer:

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Step-by-step explanation:

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4 years ago

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Vika [28.1K]

Answer:

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Step-by-step explanation:

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3 years ago

A gym owner has some purple weights and some white weights. The purple weights are 10 kilograms each, and the white weights are

snow_lady [41]

Answer: $3,9$

Step-by-step explanation:

Given

A gym owner has purple and white weights that measure 10 kg and 6 kg each

respectively.

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suppose there x purple and y white weights

$\therefore x+y=12\quad \ldots(i)\\\Rightarrow 10x+6y=84\quad \ldots(ii)\\\\\text{Solving }(i)\ \text{and }(ii)\\\\$

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Thus, there are 3 purple and 9 white weights.

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3 years ago