Question

Oblicz:

a)
c) =
d) (3 - x) ^{2} =
e) (7x - 5) ^{2} =
f) (2 + 3x) ^{2} =
g) (7 - x) ^{2} =
h) ( + x) ^{2} =
i) (x - 5) razy (x + 5) =
j) (2x - 3) razy (2x + 3) =

WZORY:
(a - b) = - 2ab + b^{2}
(a + b) = + 2ab + b^{2}
(a - b) razy (a + b) = a^{2} - b^{2}

PILNE!

Answer 1

A) (2x-5)^{2}= 4x^{2} + 20x + 25
b) (x+3)^{2}=x^{2}+6x+9
c) (4x-5)^{2} =16x^{2}-40x+25
d) (3 - x) ^{2} =9-6x+x^{2}
e) (7x - 5) ^{2} =49x^{2}-70x+25
f) (2 + 3x) ^{2} =4+12x+9x^{2}
g) (7 - x) ^{2} =49-14x+x^{2}
h) (  +  x) ^{2}  =3+2(pier 6)x+2x^{2}
i) (x - 5) razy (x + 5) =x^{2}-25
j) (2x - 3) razy (2x + 3) =4x^{2}-9