Answer:
blabka
Step-by-step explanation:
dfhghokbhkohvg7g7g7cucucucih8g6cycycyxyf
1 person can finish 1st, 1 person can finish 2nd, one can finish 3rd, out of one of the other three one has to be last. Mark as Brainliest please
Answer:
x = -3±i sqrt(2)
Step-by-step explanation:
x^2+6x + 11 =0
Subtract 11 from each side
x^2+6x + 11-11 =0-11
x^2+6x =-11
Take the coefficient of the x terms
6
Divide by 2
6/2 =3
Square it
3^2 =9
Add it to each side
x^2+6x + 9 =-11+9
x^2 + 6x+9 = -2
The left hand side becomes (x+ (6/2) )^2
(x+3)^2 = -2
Take the square root of each side
sqrt((x+3)^2) = ±sqrt(-2)
x+3 = ±sqrt(-2)
x+3= ±i sqrt(2)
Subtract 3 from each side
x+3-3 = -3±i sqrt(2)
x = -3±i sqrt(2)
Factoring x2-45x+324
The first term is, <span> x2 </span> its coefficient is 1 .
The middle term is, -45x its coefficient is -45 .
The last term, "the constant", is +324
Step-1 : Multiply the coefficient of the first term by the constant <span> 1 • 324 = 324</span>
Step-2 : Find two factors of 324 whose sum equals the coefficient of the middle term, which is -45 .
<span> -324 + -1 = -325 -162 + -2 = -164 -108 + -3 = -111 -81 + -4 = -85 -54 + -6 = -60 -36 + -9 = -45 That's it</span>
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -36 and -9
x2 - 36x - 9x - 324
Step-4 : Add up the first 2 terms, pulling out like factors :
x • (x-36)
Add up the last 2 terms, pulling out common factors :
9 • (x-36)
Step-5 : Add up the four terms of step 4 :
(x-9) • (x-36)
Which is the desired factorization
Equation at the end of step 1 :<span> (x - 9) • (x - 36) = 0
I hope my answer has come to your help. Thank you for posting your question here in Brainly.
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