The number 5 is added to three times the product of two numbers, m, and n. What is the expression formed? What is the value of the expression if m is 4 and n is 5? [2 MARKS]

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Solution

Forming the expression: 1 Mark
Value of expression: 1 Mark

The product of two numbers, m, and n is
m $\times$ n.

Three times the product is 3mn.

Adding 5 to three times the product
= 5 + 3mn

The expression formed is 5 + 3mn

The value of the product at m = 4 and n = 5
$= 5 + 3 \times 4 \times 5 = 65$

Hence, the value of the expression if m = 4 and n = 5 is 65.

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