Question

simplify x(2x+3)-5 and find the value of this expression when x=1/2​

Answer 1

Answer:

-3

Step-by-step explanation:

= X(2X+3)-5

= 1/2(2*1/2+3)-5

= 1/2(1+3)-5

= 1/2*4-4

= 2-5

= -3

Answer 2

Answer:

1/2(2(1/2)+3)-5=-3

Step-by-step explanation:

from starting

x(2x+3)-5

Putting value of x =1/2

1/2{2(1/2)+3}-5

1/2(1+3)-5

1/2(4)-5

-3

so -3 is the answer

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