6)Simplify and verify the result for the given values (4a 2 -6ab+9b 2 )(2a+3b) ;a=2,b=1 7) Factorise the given expression 9x(6x-5y)-12x 2 (6x-5y)

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step-by-step explanation:

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

step-by-step explanation: it is d