Answer:
9.4
Step-by-step explanation:
6+3.4 = 9.4
The answer is 1
a times c = 10
b^2=9+1=10
10/10=1
Answer:
- Answer 2) 3a(16a^2-25)
- Answer 4) 3a(4a+5)(4a-5)
- Answer 5) -3a(25-16a^2)
- Answer 6) -3a(5-4a)(5+4a)
Step-by-step explanation:
The factors of each term are ...
So, the greatest common factor is 3a. Factoring that out gives ...
3a(16a^2 -25) . . . . . . matches answer 2
The factor in parentheses is the difference of squares, so it can be factored. You have memorized the form for the difference of squares ...
p^2 -q^2 = (p -q)(p +q)
so you know the factoring of this with p=4a and q=5 will be ...
3a(4a -5)(4a +5) . . . . . . matches answer 4
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Any <em>pair</em> of factors can be multiplied by -1 without changing the value of the expression. So, two more answers are equivalent:
(-3a)(-(16a^2 -25) = -3a(25 -16a^2) . . . . . . matches answer 5
(-3a)(-(4a -5)(4a +5) = -3a(5 -4a)(5 +4a) . . . . . . matches answer 6
No of ways = 9! = 362880
The fourth option is correct.
Hope it helped!
