Sagot :
Answer:
1. 9x² - 30x + 25
2. 4a²-12ab+9b²
3. 4d²-28ed+49e²
4. 8y^3 - 36y² + 54y -27
5. m²+4m+4
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Step-by-step explanation:
(3x-5)(3x-5)
=9x²-15x-15x+25
=9x²-30x+25
(2a-3b)(2a-3b)
=4a²-6ab-6ab+6b
=4a²-12ab+6b
(2d-7e)(2d-7e)
=4d²-14de-14de+49e
=4d²-28de+49e
(2y-3)(2y-3)(2y-3)
=8y³-6y-6y-6y-27
=8y³-18y-27
(m+2)(m+2)
=m²+2m+2m+4
=m2+4m+4