Question

simplify 2x (5x -6) + 4 and its value for i) x = 2 ii) x = ½​

Answer 1

Answer:

when x=2 ... 2*2 (5*2-6) +4

applying bodmas rule --> 4(4)+4

--> 16+4

-->20

when x=1/2.... 2*1/2(5*1/2-6) +4

applying bodmas 1(-7/2)+4

taking lcm (8-7)/2

---->1/2

Answer 2

GIVEN QUESTION⤵️

2x(5x-6)+4

1st bit:⤵️

Taking x value as 2 we should substitute 2 in x value

so⤵️

2(2)(5(2)-6+4

4×10-10⤵️

40-10

30.

Answer of 1st bit is 30

2nd bit⤵️

Taking x value as ½

2(½)(5)(½)-6+4

(1)(5/2)-10

5/2-10

3/2

So answer of 2nd bot is 3/2

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