Question

find the value if a=-2:2a²-4a+5​

Answer 1

Answer:

15

Step-by-step explanation:

$2 \times ( - 2)^{2} - 4 \times - 2 +5$

$2 \times 4 + 2 + 5$

$8 + 7$

$15$

Answer 2

Answer:

The value of the expression is 21.

Step-by-step explanation:

The equation is: 2a² - 4a + 5.

Compute the value of the expression if a = -2 as follows:

$2a^{2}-4a+5=(2\times(-2)^{2})-(4\times(-2))+5\\=8+8+5\\=21$

Thus, the value of the expression is 21.