<span>x²-x-30=0
factor this equation first
(x-6)(x+5) = 0
x - 6 = 0
x + 5 = 0
x = 6 , x = -5
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28 would be, or as it’s multiplied by 17, it would be 476
Let b>a,
a+b=40 so we can say a=40-b
We are told that b-a=6.5, using a found above in the equation gives us:
b-(40-b)=6.5
b-40+b=6.5
2b-40=6.5
2b=46.5
b=23.25, and since a=40-b
a=40-23.25
a=16.75
So a=16.75 and b=23.25
check...
16.75+23.25=40, 40=40
23.25-16.75=6.5, 6.5=6.5
although none of these are right, C would make the most sense
Answer:
16x^7+13x^3+2
Step-by-step explanation:
8x^3+9x^7+5x^3+2+7x^7
Add 8x^3 and 5x^3 (don’t add the exponents together )
13x^3+9x^7+2+7x^7
Add 9x^7 and 7x^7
13x^3+16x^7+2
Then put them in order from biggest exponent to smallest
16x^7+13x^3+2
