Question

HEYY MATES!!!

PLEASE SOLVE P ALL THESE QUESTIONS I HAVE POSTED ABOVE..! Chapter-Algebraic expressions and exponents.. I need it urgent.. No trash talk, or I will report your answer or report it.​

Answer 1

Step-by-step explanation:

1) -3a + 4b -6ab

+( -9a - 4b +2ab)

- 12a +0 -4ab

and sum of other will be

8a -5b -3ab

+(-6a+8b+0)

2a +3b - 3ab

now we are supposed to find diffrence between

2a + 3b -3ab

-( -12a +0 -4ab)

14a +3b+ab answer

2) ( 4/5)^2x × ( 16/25)^-1 ÷ (5/4)^-2 = (4/5)^-6x

(4/5)^2x × (4/5)^-2 ÷ (4/5)^2 = (4/5)^ -6x

(4/5)^2x +(-2) -(2) = (4/5)^-6x

now if ve have equal radicants on both side lets compare powers

2x -2-2= -6x

8x = 4

x = 4/8 = 1/2 answer

3) so sum of

25ab-10a

+(5ab-0-18)

30ab- 10a -18

now subtract it from

11ab -5a -18

-(30ab-10a-18)

-19ab + 5a answer

5) (2/7) ^-8 ×(2/7)^-6 = (2/7)^7x

so here radicants are already equal lets compare powers

-8 - 6 = 7x

-14 = 7x

x = -2 answer