Hannahmichelleidn
Answered

Get the answers you've been looking for with the help of IDNLearn.com's expert community. Join our community to receive prompt and reliable responses to your questions from experienced professionals.

solve the equation x(3x-8)=28

Sagot :

Elisaselmani9idn
Simplifying x(3x + -8) = 28 Re-order the terms: x(-8 + 3x) = 28 (-8 * x + 3x * x) = 28 (-8x + 3x2) = 28 Solving -8x + 3x2 = 28 Solving for variable 'x'. Reorder the terms: -28 + -8x + 3x2 = 28 + -28 Combin like terms: 28 + -28 = 0 -28 + -8x + 3x2 = 0 Factor a trinomial. (-2 + -1x)(14 + -3x) = 0
Hope this helped :)
Apologiabiologyidn
first distibute ussing distributive property which is a(b+c)=ab+ac so x(3x-8)=28 3x^2-8x=28 subtract 28 from both sides 3x^2-8x-28=0 if you can factor it then you get xy=0 then x and/or y=0 so to factor multiply first term and last term together so 3 times -28=-84 now find what 2 numbers will multiply to get -84 and add to get -8 factors of -84 -2,41 -3,28 -4,21 -6,14 -7,12 now add them together and find which ones add to 8 or -8 -2,41=39 -3,28=25 -4,21=17 -6,14=8 -7,12=5 the numbers are -14 and 6 group 3x^2+6x-14x-28 group (3x^2+6x)+(-14x-28) reverse distribute which is ab+ac=a(b+c) (3x)(x+2)+(-14)(x+2) reverse distribute again (3x+(-14) times (x+2) (3x-14)(x+2)=0 set each to zero 3x-14=0 x+2=0 3x-14=0 add 14 to both sides 3x=14 divide boh tisdes by 3 x=14/3 x+2=0 subtract 2 from both sides x=-2 x=14/3 and -2
Your participation is crucial to us. Keep sharing your knowledge and experiences. Let's create a learning environment that is both enjoyable and beneficial. For dependable answers, trust IDNLearn.com. Thank you for visiting, and we look forward to helping you again soon.