Pomocy !
a) a²+14a+49
b) 1,44+2,4b+b²
c) c²+3 1/3c+25/9
d) 5+2√5d+d√
e) 9k²+12/5k+4/25
f) 25m²+60mn+36n²
a.
(a+7)²=
(a+7)*(a+7)=
a²+14a+49
b.
(1,2+b)²=
(1,2+b)*(1,2+b)=
b²+2,4b+1,44
c.
(c+1⅔)²=
(c+1⅔)*(c+1⅔)=
c²+3⅓c+2⁷/₉
d.
(√5+d)²=
(√5*d)(√5*d)=
d²+2√5d+5
e.
(3k+⅖)²
(3k+⅖)*(3k+⅖)
9k²+2⅖k+⁴/₂₅
f.
(5m+6n)²
(5m+6n)*(5m+6n)
25m²+50mn+36n²
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a) a²+14a+49
b) 1,44+2,4b+b²
c) c²+3 1/3c+25/9
d) 5+2√5d+d√
e) 9k²+12/5k+4/25
f) 25m²+60mn+36n²
a.
(a+7)²=
(a+7)*(a+7)=
a²+14a+49
b.
(1,2+b)²=
(1,2+b)*(1,2+b)=
b²+2,4b+1,44
c.
(c+1⅔)²=
(c+1⅔)*(c+1⅔)=
c²+3⅓c+2⁷/₉
d.
(√5+d)²=
(√5*d)(√5*d)=
d²+2√5d+5
e.
(3k+⅖)²
(3k+⅖)*(3k+⅖)
9k²+2⅖k+⁴/₂₅
f.
(5m+6n)²
(5m+6n)*(5m+6n)
25m²+50mn+36n²