$x^2+4x+1=0\\\\\underbrace{x^2+2x\cdot2+2^2}_{(x+2)^2}-2^2+1=0\\\\use\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2-4+1=0\\\\(x+2)^2-3=0\\\\(x+2)^2=3\iff x+2=\sqrt3\ or\ x+2=-\sqrt3\\\\\boxed{x=\sqrt3-2\ or\ x=-2-\sqrt3}$

7 0

3 years ago

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Three years back , a father was 24 years older than his son .at present,the father is five times as old as the son.how old will

azamat

Answer:

The son is 5 I think

Step-by-step explanation:

24+3=27

27 divided by 5 = 5.4

round 5.4 to 5 since it is under .5

and you get 5

3 0

3 years ago

Kevin is making a banner with area of 7 square ft width and length of banner is whole numbers what numbers are possible dimensio

stepladder [879]

Answer:

Length = 7, width = 1.

Step-by-step explanation:

7 and 1 are the only possible dimensions as 7 is a prime number.

3 0

3 years ago

Find the sum of the interior angles of a regular 32-gon. Then find the measure of each angle.

Law Incorporation [45]

Answer is b Fosho Fosho

5 0

3 years ago