Question

64.4^2-3.2^2

Answer 1

64.4^2-3.2^2
(64.4-3.2)^2
(61.2)^2

Answer 2

4137.12

Answer 3

64.4^2-3.2^2


(64.4+3.2)(64.4-3.2)


(67.6)(61.2)


4137.12

Answer 4

saifoo, you cannot do that since \[\Large x^2-y^2\neq (x-y)^2\] for all x and y

Answer 5

Yup.

Answer 6

The answer options are a. 1,031 b. 4,084 c. 1,036 or d. 1,012

Answer 7

are those dots multiplication signs?

Answer 8

if so, then



64*4^2-3*2^2


64*16-3*4


1024-12


1012

Answer 9

They may be its 7th grade math

Answer 10

use * instead of . to mean "times" or "multiply"

Answer 11

Oh thank you, makes sense now :)

Answer 12

. is used for decimal numbers

eg: 5.5 is 5 and a half