Desenvolupa les potències següents:
a) (x+2y)2
b) (3x+1)2
c) (2x2-3)2
Fitxa 2: Identitats notables
Quiz
•
Mathematics
•
9th Grade
•
Easy
Sonia Dominguez
Used 1+ times
FREE Resource
7 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Desenvolupa les potències següents:
a) (x+2y)2
b) (3x+1)2
c) (2x2-3)2
a) x2+2xy+4y2
b) 9x2+2x+1
c) 4x4-2x2+9
a) x2+4xy+4y2
b) 9x2+6x+1
c) 4x4-12x2+9
a) x2+xy+4y2
b) x2+6x+1
c) x4-12x2+9
2.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
3.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Expressa com un quadrat d’una suma o d’una diferència aquestes expressions:
a) x2+6x+9
b) 4a2+12a+9
c) 4x2-4x+1
a) (x+2)2
b) (a+3)2
c) (x-1)2
a) (x+3)2
b) (2a+3)2
c) (2x-1)2
a) (x+9)2
b) (2a+9)2
c) (2x+1)2
4.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Expressa com un quadrat d’una suma o d’una diferència aquestes expressions:
d) x4-2x2+1
e) x2-10x+25
f) b4+6b2+9
a) (2x2-1)2
b) (x-2)2
c) (2b2+3)2
a) (x-1)2
b) (x+5)2
c) (b+3)2
a) (x2-1)2
b) (x-5)2
c) (b2+3)2
5.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Calcula els productes següents:
a) (2x+1)(2x-1)
b) (x2-4)(x2+4)
c) (3a-b)(3a+b)
d) (2a2+5)(2a2-5)
a) x2-1
b) x4-4
c) a2-b2
d) a4-5
a) 4x2-1
b) x4-16
c) 9a2-b2
d) 4a4-25
a) 4x2+1
b) x4+16
c) 9a2+b2
d) 4a4+25
6.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Calcula els apartats següents:
e) (3x+2)(3x-2)
f) (5x2-3)2
g) (3a2+b)2
h) (2x-1)(2x+1)
e) 9x2-4
f) 25x4-30x2+9
g) 9a4+6a2b+b2
h) 4x2-1
e) 6x2-4
f) 10x4-6
g) 3a4+3a2b+b2
h) 4x2+1
e) 9x2+4
f) 25x4+9
g) 9a4-6a2b+b2
h) 4x2+1
7.
MULTIPLE CHOICE QUESTION
15 mins • 1 pt
Expressa com una identitat notable:
a) 4x2-25
b) 9a4-16b2
c) 16-25x2
d) 9x2-25y2
e) 16-40x+25x2
f) 100a2+144+240a
a) (x-10)(x+10)
b) (a2-b)(a2+b)
c) (2-4x)(2+4x)
d) (x-y)(x+y)
e) (2-x)2
f) (a+2)2
a) (x-5)(x+5)
b) (3a2-b)(3a2+b)
c) (4-x)(4+x)
d) (2x-y)(2x+y)
e) (2-4x)2
f) (5a+10)2
a) (2x-5)(2x+5)
b) (3a2-4b)(3a2+4b)
c) (4-5x)(4+5x)
d) (3x-5y)(3x+5y)
e) (4-5x)2
f) (10a+12)2
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