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3 years ago

What are the like terms in the expression below2x³+5y - 6x² - 4y² + 8x²y - x³

Mathematics

1 answer:

Bas_tet [7]3 years ago

7 0

Answer:

$x^{3} +5y-6x^{2} -4y^{2} +8x^{2} y$

Step-by-step explanation:

$2x^{3} +5y-6x^{2} -4y^{2} +8x^{2} y-x^{3}$

$(2x^{3} -x^{3} )$

$x^{3} +5y-6x^{2} -4y^{2} +8x^{2} y$

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There are four children in a family, two girls, Kate and sally, and two boys, tom and Ben.

scZoUnD [109]

Answer:

Bren=5 years

Tom=7yrs

Sally=4 yrs

Kate=8years

Step-by-step explanation:

-Let Bren's current age be x, therefore Tom is x+2

-Let Sally's current age be y, therefore Kate is 2y

-Also, given that:

$x+x+2=2y+y\\\\2x+2=3y\ \ \ \ \ \ ...i$

#We calculate the ages one year ago of Tom and Sally:

$\#Tom's \age\\x+2-1=x+1\\\\\# Sally's \ age\\=y-1\\\\\therefore x+1=2(y-1)\\\\x=2y-3\ \ \ \ \ ...ii$

#Substitute for x in i;

$2x+2=3y\\\\2(2y-3)+2=3y\\\\4y-6+2=3y\\\\y=4\\\\2y=4\times 2=8\\\\2x+2=4+8=12\\\\2x=10\\\\x=5\\\\(x+2)=7$

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4 years ago

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3 years ago

Find the number of 3-digit numbers formed using the digits 1 to 9, without repetition, such the numbers either have all digits l

amm1812

Answer:

Step-by-step explanation:

Given,

The possible digits are 9 ( i.e. 1, 2, 3, 4, 5, 6, 7, 8, 9 )

Digits less than 5 = 4 ( i.e. 1, 2, 3, 4 )

Digits greater than 4 = 5 ( i.e. 5, 6, 7, 8, 9 )

Here, we need to make 3 digit number from these digits without repeating,

If digits are less than 5,

Then the possible ways = 4 × 3 × 2

= 24

If digits are greater than 4,

Then the possible ways = 5 × 4 × 3

= 60

Hence, the total ways of choosing three digits number without repeating if all digits are less than 5 or all digits are greater than 4

= 24 + 60

= 84

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3 years ago

What are the like terms in the expression below2x³+5y - 6x² - 4y² + 8x²y - x³​

What are the like terms in the expression below2x³+5y - 6x² - 4y² + 8x²y - x³