Question

if a=-2,b=-3 and c=5 find the value of:2a+3b-5c-a^2-b^2+c^2​

Answer 1

Step-by-step explanation:

if a=-2,b=-3 and c=5 find the value of:2a+3b-5c-a^2-b^2+c^2

put the value of a,b,c

2(-2)+3(-3)-5(5)-(-2)^2-(-3)^2+5^2

=0

Answer 2

Step-by-step explanation:

$a = - 2, \: b=-3, \: and \: c=5 \\ 2a + 3b - 5c - {a}^{2} - {b}^{2} + {c}^{2} \\ = 2 \times ( - 2) + 3 \times ( - 3) - 5 \times 5 - {( - 2)}^{2} - {( - 3)}^{2} + {(5)}^{2} \\ = - 4 - 9 - 25 - 4 - 9 + 25 \\ = - 26$

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