Question

fatore os triometros:
b) x² + 7x + 10 =
c) x²+6x+5=
d) x²‐4x-21=
e) x²-9x÷14=​​

Answer 1

Resposta:

b)(×+5)×(×+2). c)(×+5)×(×+1). d)(×+3)×(×-7). e) 1 ×(14×-9)

14

Explicação passo-a-passo:

b)ײ+7×+10=ײ+5×+2×+10=×(×+5)+2(×+5)=(×+5)×(×+2)

c)ײ+6×+5=ײ+5×+×+5=×(×+5)+×+5=(×+5)×(×+1)

d)ײ-4×-21=ײ+3×-7×-21=×(×+3)-7(×+3)=(×+3)×(×-7)

e)ײ-9×÷14=ײ-9×=×-9 =×1× (14×-9)=1 ×(14×-9)

14 14 14 14