If i add the square of a number to
2 times the number, i get 63.
what could the number be?

Hope this helps.

If I add the square of a number to  2 times the number, I get 63. The number can be 7 or -9

Solution:

Given that if i add the square of a number to 2 times the number, i get 63

We have to find the number.

Let the number be "n"

Square of number + 2 times the number = 63

Hence we get,

Let us factorize the expression

"2n" can be written as "-7n + 9n"

Now 63 can be written as "9 x 7"

Take "n" as common term from two terms and "9" as common from last two term

Now take "n - 7" as common term

Equating to zero we get,

n - 7 = 0 or n + 9 = 0

n = 7 or n = -9

Hence the number can be 7 or -9

1. is 4 and 2. is 3

step-by-step explanation:

so if you look at the first one you see that 1 is to 4 and 2 is to 8 and so on, so you can see for every 1 there is a times 4 so if it were 3 then it would be 3*4 and it is 12

for number 2 it is 3 because 1 is to 3 and 2 is to 6 so for every 1 there is 3 so if it were 3 then there would be 3*3 = 9

step-by-step explanation: