9 x squared negative 25 is equal to 3 x negative 5 times 3 x plus 5
B
9 x squared negative 25 is equal to negative 3 x plus 5 times 3 x plus 5
C
9 x squared negative 25 is equal to negative 3 x plus 5 times 3 x negative 5
D
9 x squared negative 25 is equal to 3 x negative 5 times 3 x negative 5
Explanation
Use the difference-of-squares rule: (a − b)(a + b) = a² − b². With a = 3x and b = 5, (3x − 5)(3x + 5) = (3x)² − 5² = 9x² − 25, so the true equation is choice A.
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