Question

Simplify 2x(x-3)+2.and find its value for x=1 and x=1/2

Answer 1

Step-by-step explanation:

Putting the value of x is 1

$2 \times 1(1 - 3) + 2$

$2 \times 2 + 2$

=4

Putting the value of x is 1/2

$2 \times \frac{1}{2} ( \frac{1}{2} - 3) + 2$

1×(1-6/2)+2

1×2+2

4

Answer 2

Simplification of 2x(x–3)+32 is 2x² -6x + 2 and it value at x= 1 is -2 and value at  x = 1/2 is -1/2

Step 1:

Given expression is 2x(x–3)+2

Step 2:

Apply Distributive property a(b + c) = ab + ac

2x² - 6x + 2

Step 3:

Substitute x= 1 and find value at x = 1

2(1)² - 6(1) + 2

= 2 - 6 + 2

= -2

Step 4:

Substitute x=  1/2 and find value at x = 1/2

2(1/2)² - 6(1/2) + 2

= 1/2 -3 + 2

= -1/2

Simplification of 2x(x–3)+32 is 2x² -6x + 2 and it value at x= 1 is -2 and value at  x = 1/2 is -1/2