Question

only for mathematician✌️. Don't give reply who don't know.please give me solution of all parts please fast​

Answer 1

Answer:

(200+3)×(200+5)

200(3+5)

200×8

1. =1600 is the final answer
2. hope it's help follow me
3. MARK MY ANSWER AS BRAINLIEST ONE
4. thanks♡

Answer 2

$\large\underline{\underline\mathrm\red{FORMULA}}$

$(x+a)(x+b)=x²+(a+b)x+ab$

$\large\underline{\underline\mathrm\red{QUESTION\:1}}$

$1.7 ×1.9$

$\large\underline{\underline\mathrm\blue{SOLUTION}}$

$\bold{\implies(2-0.3)×(2-0.1)}$

$\bold{\implies(2+(-0.3))×(2+(-0.1))}$

$\small{\boxed{(x+a)(x+b)=x²+(a+b)x+ab}}$

• x=2 ; a= -0.3 ;b= -0.1

$\bold{\implies (2)² +(-0.3+(-0.1))2 + (-0.1)×(-0.3)}$

$\bold{\implies 4 - 0.8 + 0.03}$

$\bold{\implies 3.23}$

$\large\underline{\underline\mathrm\red{QUESTION\:2}}$

$203×205$

$\large\underline{\underline\mathrm\blue{SOLUTION}}$

$\implies(200+3)(200+5)$

$\small{\boxed{(x+a)(x+b)=x²+(a+b)x+ab}}$

• x=200 ;a=3 ;b=5

$\bold{\implies (200)² +(3+5)2 + (3)×(5)}$

$\bold{\implies 40000 +16 + 15}$

$\bold{\implies 40031}$

$\large\underline{\underline\mathrm\red{QUESTION\:3}}$

$3.1×3.5$

$\large\underline{\underline\mathrm\blue{SOLUTION}}$

$\implies(3+0.1)(3+0.5)$

$\small{\boxed{(x+a)(x+b)=x²+(a+b)x+ab}}$

x=3 ;a=0.1 ;b=0.5

$\bold{\implies (3)² +(0.1+0.5)2 + (0.1)×(0.5)}$

$\bold{\implies 9+1.2+0.05}$

$\bold{\implies 10.25}$

$\large\underline{\underline\mathrm\red{QUESTION\:4}}$

$52×67$

$\large\underline{\underline\mathrm\blue{SOLUTION}}$

$\implies(60-8)(60+7)$

$\implies(60+(-8))(60+7)$

$\small{\boxed{(x+a)(x+b)=x²+(a+b)x+ab}}$

x=60 ;a= -8 ;b=7

$\bold{\implies (60)² +(-8+7)2 + (-8)×(7)}$

$\bold{\implies 3600-2-56}$

$\bold{\implies 3600-58}$

$\bold{\implies 3542}$