Solve the equation $3 a b + 4 b c - 5 c a$ when $a = 4, b = 5$ , and $c = - 2$

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Solution

Given Equation is
$3 a b + 4 b c - 5 c a a n d a = 4, b = 5, c = - 2$

$= 3.4.5 + 4.5. (- 2) - 5. (- 2) .4$
$= 60 - 40 + 40$
= 60 ( Ans)

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8 a^{2} b - 3 a b + 5 b^{2} b y 6 a b

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Simplify:
$(a - 2 b + 5 c) (a - b) - (a - b - c) (2 a + 3 c) + (6 a + b) (2 c - 3 a - 5 b)$

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Solve the following equations.

(a) 4 = 5 (p − 2) (b) − 4 = 5 (p − 2)

(e) 0 = 16 + 4 (m − 6)

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