Question

solve x2+10x+21=0

Answer 1

inn detail

Answer 2

(x+7)(x+3)

Answer 3

that is detail

Answer 4

it's factoring....what numbers multiply to 21 and add to 10?

Answer 5

7 and 3

Answer 6

are u traporting 27

Answer 7

where are you getting 27?

Answer 8

they asked to solve but u

Answer 9

well in order to solve it you have to factor it

Answer 10

now you set each one equal to 0 and solve

Answer 11

so it's x+7 = 0 and that answer is -7 by moving the 7 to the other side

Answer 12

same with the other...answer is -3

Answer 13

so your final answer is x = -7; x = -3

Answer 14

x = (-b +- square root (b^2-4ac))/2a
(any good calculator has this formula built in)

x = 3 and 7. ie (x-3)(x-7). Since the product of these two numbers must be positive you have to have x < 3 (both values are negative) and x >7 (both values are positive).

so 3 > x > 7

Answer 15

that's the quadratic formula that is used only when you can't factor an equation

Answer 16

this equation factors fine

Answer 17

no u r wrong my answer is only correct

Answer 18

lol..i'm not wrong...but okay...since you seem to know the answer already...really no point in asking here...good luck

Answer 19

ok sorry gye

Answer 20

nice pic

Answer 21

its nice nature ya correct

Answer 22

its nice or not mathballet

Answer 23

u r telling nice