a + 3 * 2a – 16
64 – a2 2a + 6
2007-12-24 03:54:18 · 7 answers · asked by Marcia O 1 in Science & Mathematics ➔ Mathematics
If there's supposed to be brackets somewhere then I apologize, I just did the question as I read it.
Use BEDMAS
Brackets
Exponents
Division/Multiplication
Addition/Subtraction
1)
=a + 6a - 16
=7a - 16
2)
I'm not quite sure what you're asking here. I'll take a shot and say its:
64 - a² * 2a + 6
=64 - 2a^3 + 6
=72 - 2a^3
2007-12-24 03:59:45 · answer #1 · answered by Jacob A 5 · 0⤊ 2⤋
a + 3 * 2a – 16
= a +6a -16 = 7a-16
64 – a2 2a + 6
=70 -a2 2a
Ask a poorly formatted question and get the wrong answer.
2007-12-24 12:02:36 · answer #2 · answered by ironduke8159 7 · 1⤊ 2⤋
(a + 3) (2a - 16)
foil
first a * 2a = 2a^2
outside a * 16 = -16a
inside 3 * 2a = 6a
last 3 * 16 = -48
2a^2 + 6a -16a -48
combine like terms 2a^2 -10a - 48
2007-12-24 12:10:05 · answer #3 · answered by ikeman32 6 · 0⤊ 2⤋
Do PEMDAS :
Parentheses (or other grouping symbols)
Exponents
Multiplication - Division (whichever one comes first in the equation, go left to right)
Addition- Subtraction (same as Multi. Division)
a+3*2a-16
=a+6a-16
=7a-16
I don't really understand the second one? [a2 2a] ???
2007-12-24 12:05:52 · answer #4 · answered by Lauren 4 · 0⤊ 2⤋
a + 3 * 2a – 16
= a + 6a - 16
=7a -16
The second one is missing a sign...
2007-12-24 12:01:46 · answer #5 · answered by Anonymous · 0⤊ 2⤋
factor each one first
take neg of top also -(a+3) 2(a-8)
take out neg on 64-a2, -(a+8)(a-8) 2(a+3)
cancel out a+3's
-2(a-8)
(a-8)(a+8)
a-8's cancel
-2/a+8
this is if your Q is a fraction * a fraction
2007-12-24 12:01:47 · answer #6 · answered by csd 3 · 0⤊ 1⤋
learn PEMDAS
2007-12-24 11:57:37 · answer #7 · answered by cheerios 3 · 0⤊ 2⤋