If $a = 2$ and $b = 3$ , find the value of $5 a^{2} - 2 a b$ .

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Solution

5(22)-223
20-12
8

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Similar questions

a = 2

b = 3

2 a - 3 b

5 a^{2} - 2 a b

a^{3} - b^{3}

a = 2, b = 3

c = - 2

a^{2} + b^{2} + c^{2} - 2 a b + 3 a b c .

Find the value of the polynomial $a^{3} + 3 a^{2} b + 2 a b - b^{2}$ at $a = - 2$ and $b = 3$ . [2 MARKS]

If a + b = 1 and a - b = 7, then the value of 5(a² + b²) is

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