jlkhardman
contestada

please help

Refer to expression 1 and expression 2

expression 1

6x7-3^2x9+4^3

expression 2

5+4x2+6-2x2-1

(a) What is the value of expression 1

(b) insert parentheses in expression 2 so that is has the value of 19. then show why your expression has a value of 19.​

Respuesta :

Answer:

1) 25

2) (5+4)×2+6-(2×2)-1

Step-by-step explanation:

1) do exponents: 6×7-9×9+64,

do multiplication: 42-81+64,

do add & subtract: 25

2) (5+4)×2+6-(2×2)-1

(9)×2+6-(4)-1

18+6-4-1

=19