Question

1. Refer to Expression 1 and Expression 2.
Expression 1

Expression 2

(a) What is the value of Expression 1?
(b) Insert parentheses in Expression 2 so that it has a value of 19. Then show why your expression has a value of 19.

Answer 1

expression 1 : 6 x 7 - 3^2 x 9 + 4^2

Answer 2

expression 2 : \[5+4x2 + 6 - 2 x 3 - 1\]

Answer 3

1)
6 x 7 - 3^2 x 9 + 4^2.
6 x 7 - 9 x 9 + 16
42 - 81 + 16
-23

Answer 4

the 'x' is not a multiplication sign, am I right?

Answer 5

i think it is.

Answer 6

is that both equations up there.