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valkas [14]
3 years ago
6

2x^2−10xy+3xy−15y^2 factor by grouping

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
8 0
2x²-10xy+3xy-15y²

Add like terms.

2x²+ (-10xy+3xy) -15y²

Simplify.

2x² + (-7xy) - 15y²

Rearrange the equation.

2x²-15y²-7xy

~Hope I helped~
SIZIF [17.4K]3 years ago
8 0
There are four terms in your algebraic expression.  Notice that the left two terms have the factors 2 and x in common, whereas the right two terms have the factors 3 and y in common:

2x(x-5y) + 3y(x-5y).  Can you now factor this further?  Note that the two terms here have a common factor, (x-5y).
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3 years ago
*1 A car is driving away from a crosswalk. The distance d (in feet) of the car from the crosswalk t
antoniya [11.8K]

Answer:

The change in the car's distance is 8 feet

Step-by-step explanation:

* Lets explain how to solve the problem

- A car is driving away from a crosswalk

- The distance d (in feet) of the car from the crosswalk t  seconds

  since the car started moving is given by the formula d = t² + 3.5

- The time increasing from 1 second to 3 seconds

- We need to now the change of the car's distance from the crosswalk

∵ The equation of the distance is d = t² + 3.5

∵ The time is 1 second

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∴ d = 9 + 3.5 = 12.5 feet

∵ The change of the distance = d of 3 sec - d of 1 sec

∵ d of 3 sec = 12.5 feet

∵ d of 1 sec = 4.5 feet

∴ The change of the distance = 12.5 - 4.5 = 8 feet

∴ The change in the car's distance is 8 feet

7 0
4 years ago
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vovikov84 [41]
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6 0
3 years ago
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