Solution - Simplification or other simple results
Step by Step Solution
Step 1 :
Equation at the end of step 1 :
(26t2 - 112t) + 49
Step 2 :
Trying to factor by splitting the middle term
2.1 Factoring 64t2-112t+49
The first term is, 64t2 its coefficient is 64 .
The middle term is, -112t its coefficient is -112 .
The last term, "the constant", is +49
Step-1 : Multiply the coefficient of the first term by the constant 64 • 49 = 3136
Step-2 : Find two factors of 3136 whose sum equals the coefficient of the middle term, which is -112 .
| -3136 | + | -1 | = | -3137 | ||
| -1568 | + | -2 | = | -1570 | ||
| -784 | + | -4 | = | -788 | ||
| -448 | + | -7 | = | -455 | ||
| -392 | + | -8 | = | -400 | ||
| -224 | + | -14 | = | -238 | ||
| -196 | + | -16 | = | -212 | ||
| -112 | + | -28 | = | -140 | ||
| -98 | + | -32 | = | -130 | ||
| -64 | + | -49 | = | -113 | ||
| -56 | + | -56 | = | -112 | That's it |
Step-3 : Rewrite the polynomial splitting the middle term using the two factors found in step 2 above, -56 and -56
64t2 - 56t - 56t - 49
Step-4 : Add up the first 2 terms, pulling out like factors :
8t • (8t-7)
Add up the last 2 terms, pulling out common factors :
7 • (8t-7)
Step-5 : Add up the four terms of step 4 :
(8t-7) • (8t-7)
Which is the desired factorization
Multiplying Exponential Expressions :
2.2 Multiply (8t-7) by (8t-7)
The rule says : To multiply exponential expressions which have the same base, add up their exponents.
In our case, the common base is (8t-7) and the exponents are :
1 , as (8t-7) is the same number as (8t-7)1
and 1 , as (8t-7) is the same number as (8t-7)1
The product is therefore, (8t-7)(1+1) = (8t-7)2
Final result :
(8t - 7)2
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