Explicación paso a paso:
a. x² + 10x + 25
b. y² - 14y + 49
c. x² + x - 90
d. x³ - 12x² + 48x - 64
e. x² - 64
Respuesta:
a) x2+10x+25 b) y2−14y+49 c) x2+x−90 d) x2−8x+16 e) x2−64
Evaluar
A) (x+5)2
=(x+5)(x+5)
=(x)(x)+(x)(5)+(5)(x)+(5)(5)
=x2+5x+5x+25
B) (y−7)2
=(y+−7)(y+−7)
=(y)(y)+(y)(−7)+(−7)(y)+(−7)(−7)
=y2−7y−7y+49
C) (x−9)(x+10)
=(x+−9)(x+10)
=(x)(x)+(x)(10)+(−9)(x)+(−9)(10)
=x2+10x−9x−90
D) (x−4)2
=(x+−4)(x+−4)
=(x)(x)+(x)(−4)+(−4)(x)+(−4)(−4)
=x2−4x−4x+16
E) (x+8)(x−8)
=(x+8)(x+−8)
=(x)(x)+(x)(−8)+(8)(x)+(8)(−8)
=x2−8x+8x−64
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Verified answer
Explicación paso a paso:
a. x² + 10x + 25
b. y² - 14y + 49
c. x² + x - 90
d. x³ - 12x² + 48x - 64
e. x² - 64
Respuesta:
a) x2+10x+25 b) y2−14y+49 c) x2+x−90 d) x2−8x+16 e) x2−64
Evaluar
A) (x+5)2
=(x+5)(x+5)
=(x)(x)+(x)(5)+(5)(x)+(5)(5)
=x2+5x+5x+25
B) (y−7)2
=(y+−7)(y+−7)
=(y)(y)+(y)(−7)+(−7)(y)+(−7)(−7)
=y2−7y−7y+49
C) (x−9)(x+10)
=(x+−9)(x+10)
=(x)(x)+(x)(10)+(−9)(x)+(−9)(10)
=x2+10x−9x−90
D) (x−4)2
=(x+−4)(x+−4)
=(x)(x)+(x)(−4)+(−4)(x)+(−4)(−4)
=x2−4x−4x+16
E) (x+8)(x−8)
=(x+8)(x+−8)
=(x)(x)+(x)(−8)+(8)(x)+(8)(−8)
=x2−8x+8x−64