Question

3a(4a - 7) +10 when a= 1/2​

Answer 1

Step-by-step explanation:

${12a}^{2} - 21a + 10$

$= 12 {( \frac{1}{2}) }^{2} - 21 \frac{1}{2} + 10 = 0$

$3 - \frac{21}{2} + 10 = 0$

$6 - 21 + 20$

$= 6 - 1 = 5$

Answer 2

Answer:

5/2

Step-by-step explanation:

a=1/2 (given)

3(1/2) (4(1/2) -7 ) + 10

3/2 ( 2-7) + 10

3/2 x -5 + 10

-15/2 +10

-15+20 / 2

5/2