Which of the following is an equivalent form of \((1.5\mathrm{x} - 2.4)^2 - (5.2\mathrm{x}^2 - 6.4)\)?
GMAT Advanced Math : (Adv_Math) Questions
Source: Official
Advanced Math
Equivalent expressions
MEDIUM
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Notes
Post a Query
Which of the following is an equivalent form of \((1.5\mathrm{x} - 2.4)^2 - (5.2\mathrm{x}^2 - 6.4)\)?
A
\(-2.2\mathrm{x}^2 + 1.6\)
B
\(-2.2\mathrm{x}^2 + 11.2\)
C
\(-2.95\mathrm{x}^2 - 7.2\mathrm{x} + 12.16\)
D
\(-2.95\mathrm{x}^2 - 7.2\mathrm{x} + 0.64\)
Solution
Answer Choices Explained
A
\(-2.2\mathrm{x}^2 + 1.6\)
B
\(-2.2\mathrm{x}^2 + 11.2\)
C
\(-2.95\mathrm{x}^2 - 7.2\mathrm{x} + 12.16\)
D
\(-2.95\mathrm{x}^2 - 7.2\mathrm{x} + 0.64\)
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