Argue against the phrase,
"two negatives always

make a positive."

explain why this is not

always true in
mathematics.

It depends on what operation you are doing

Step-by-step explanation:

in addition its false For Example: -2+(-2)= -4

in subtraction its false For Example -8 - (-2)= -6

in multiplication its true For Example: -8 x -3 = 24

in division its true For Example: -8/-2 = 4

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.