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(a) Simpify 3 xx (4x-5)+3 and find its v...

(a) Simpify `3 xx (4x-5)+3` and find its values for (i) `x=3` (ii) `x=1/2.` (j) simplify `a(a^2+a+1)+5` and find its value for (i) `a=0` (ii) `a=1` (iii) `a=-1`

Text Solution

Verified by Experts

The correct Answer is:
a)`3x(4x-5)+3=12x^2-15x+3`
when x=3
=12*3*3-15*3+3
=111-45
=66
b)`a(a^2+a+1)+5=a^3+a^2+a+5`
when a=0
=5
when a=1
=1+1+1+5
=8
when a=-1
=-1+1+1+5
=6.
a)`3x(4x-5)+3=12x^2-15x+3`
when x=3
=12*3*3-15*3+3
=111-45
=66
b)`a(a^2+a+1)+5=a^3+a^2+a+5`
when a=0
=5
...
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