4.The area of a square is 9x² + 30x + 25 square units.Which expressions represents the length of the side?
A.(9x² + 25)
B.(3x -5)²
C.(3x -5)(3x +5)
D.(3x + 5)²
5.In the polynomials 64x²-100,one factor is (8x-10),what is the other factor?
A.8x + 50
B.8x - 50
C.8x - 10
D.8x + 10
A.(9x² + 25)
B.(3x -5)²
C.(3x -5)(3x +5)
D.(3x + 5)²
5.In the polynomials 64x²-100,one factor is (8x-10),what is the other factor?
A.8x + 50
B.8x - 50
C.8x - 10
D.8x + 10
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Answer:
#1.D (3x+5)²
Step-by-step explanation:
9x²+30x+25
3²x²+30x +25
3²x²+2x3x x5+25
3²x²+2x3x x5+5²
(3x)²+2x3x x5+5²
(3x+5)²
Answer:
5. D
Step-by-step explanation:
64x 2 −100=0
(8x−10)(8x+10)