👤

Sagot :

Bonjour,

1 .(4+8x)²=

16 + 64x +64

identité remarquable

2. (3x+7)(3x-7)=

9x² -49

identité remarquable

3. -2x(5x-2)=

-10x² +4x

4. (-x-7)(2-5x)=

-2x +5x² -14 +35x=

5x² +33x -14

LINE16

Réponse:

1) (4+8x)(4+8x)

= 16+32x+32x+64x^2

=64^2+64x+16

2)9x^2-21+21-49

=9x^2-49

3) -10x^2+4

4)-2x+5x^2-14+35x

=5x^2+33-14

^2 signifie au carrée

Other Questions

© 2024 IDNLearn. All rights reserved.