What are the solutions of the equation? x^2+4x=21 a. 23, -27 b. 3, -7 c. -3, 7 d. 4.8, -4.8

Option (b) is correct.

The solution of the quadratic equation  is -7 and 3

Step-by-step explanation:

Consider the given quadratic equation

This can be rewritten as,

We can solve the quadratic equation using middle term splitting method,

4x can be written as 7x-3x , we get,

Taking terms common, we get,

Thus,

Thus, we get (x-3)= 0 or (x+7)= 0  

this gives x = 3 or x = -7

Thus, the solution of the quadratic equation  is -7 and 3

step-by-step explanation:

ok so im not 100% sure but you would start by adding 5.1t and 1.9t beacuse they have the same variable. that is 7t.   then add -3.6 + 1.2 which is -2.4

so then keep that as -2.4 + 7t. i apologize if this is incorrect. best luck on your test < 3

saving = more money

step-by-step explanation:

if you have 100 bucks, and you want to buy a candy bar, even if you have one at home, if you choose not to buy it, you save.

~courtney