FRAME 1-35.
Solution to
Frame 1-34
example, 6 x 7 can also be written as (6)(7). Parentheses are often used
in algebra in which letters are used to represent numbers. This allows a
a. 52
(26 x 2)
general formula to be developed. For example, the quantity a+b
4)
multiplied by the quantity c+d can be represented by:
b. 5
(20
(a + b) (c + d) = ac + ad + bc + bd
NOTE: "ac" means the quantity "a" multiplied by the quantity "c;" "ad"
means the quantity "a" multiplied by the quantity "d;" "bc" means the
quantity "b" multiplied by the quantity "c; and "cd" means the quantity
"c" multiplied by the quantity "d." Similarly, "a" times the quantity "b+c"
can be written as "a(b+c)."
Test the general formula "(a + b) (c + d) = ac + ad + bc + bd" by letting
a = 10, b = 2, c = 30 and d = 4; then check by multiplying 12 x 34.
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MD0900
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