Question

Find the value of: (a) (5x)3,where x= -2/5 (b) (-ab)2 , where a=2 and b=-1 ​

Answer 1

Answer:

a)-6

b)4

Step-by-step explanation:

a)(5x)3=5*-2/5 *3=-2*3=-6

b)(-ab)2=-(2)*(-1)*2=4

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Answer 2

Answer:

answer of (1) is -6 and (2) is 4

Step-by-step explanation:

(1) (5x)3 , at x = -2/5

= (5 × [-2/5])3

= (-2)3

= -6

(2) (-ab)2 at a = 2 and b = -1

= (-2 × [-1])2

= (2)2

= 4